Kinco K6 – Support, Wiring Diagram & Commissioning
Everything for your Kinco K6 after purchase – for the CPUs K606-24, K606EA-30 and K608-40 in all versions:
Interactive wiring diagram: power supply 24 V DC and 230 V AC, PNP and NPN sensors, encoder, analog sensors and analog output (K606EA), transistor and relay outputs, pulse output, Modbus RTU and Ethernet, with cable cross-sections and parameters
First steps: commissioning in ten steps, from first power-up to your first own program
Dimensions & mounting: dimensional drawing per model, drilling pattern, minimum clearances and a printable drilling template
Downloads: K6 user manual, dimension drawings (2D and 3D) and wiring diagrams of all CPUs and expansion modules
Free support from spstiger if you get stuck
Interactive wiring diagram
Tap a terminal or wire in the drawing to see details.
Terminal overview K6
| Terminal | Group | mm² | Function |
|---|---|---|---|
| A1+ | RS485 | 0.2–1.5* | TXD+/A of the first RS-485 interface. Modbus RTU master/slave, programming protocol, free communication; 1200–115 200 bit/s, galvanically isolated. |
| B1− | RS485 | 0.2–1.5* | TXD−/B of the first RS-485 interface. |
| A2+ | RS485 | 0.2–1.5* | TXD+/A of the second RS-485 interface, same functions as PORT1. |
| B2− | RS485 | 0.2–1.5* | TXD−/B of the second RS-485 interface. |
| SG | RS485 | 0.2–1.5* | Signal ground of both RS-485 interfaces (manual: Ground). |
| 1L− | DO | 0.2–1.5* | Reference of outputs Q0.0–Q0.4, return conductor of the loads. |
| 1L+ | DO | 0.2–1.5* | +24 V DC for the PNP outputs Q0.0–Q0.4 (20.4–28.8 V). |
| Q0.0 | DO | 0.2–1.5* | PNP transistor output (group 1L), max. 500 mA at 24 V DC, short-circuit proof. Fast output: PTO/PWM channel 0 up to 200 kHz. |
| Q0.1 | DO | 0.2–1.5* | PNP transistor output (group 1L), max. 500 mA at 24 V DC, short-circuit proof. Fast output: PTO/PWM channel 1 up to 200 kHz. |
| Q0.2 | DO | 0.2–1.5* | PNP transistor output (group 1L), max. 500 mA at 24 V DC, short-circuit proof. Direction for PTO channel 0. |
| Q0.3 | DO | 0.2–1.5* | PNP transistor output (group 1L), max. 500 mA at 24 V DC, short-circuit proof. Direction for PTO channel 1. |
| Q0.4 | DO | 0.2–1.5* | PNP transistor output (group 1L), max. 500 mA at 24 V DC, short-circuit proof. Fast output: PTO/PWM channel 2 up to 200 kHz. |
| 2L− | DO | 0.2–1.5* | Reference of outputs Q0.5–Q1.1, return conductor of the loads. |
| 2L+ | DO | 0.2–1.5* | +24 V DC for the PNP outputs Q0.5–Q1.1 (20.4–28.8 V). |
| Q0.5 | DO | 0.2–1.5* | PNP transistor output (group 2L), max. 500 mA at 24 V DC, short-circuit proof. Fast output: PTO/PWM channel 3 up to 10 kHz. |
| Q0.6 | DO | 0.2–1.5* | PNP transistor output (group 2L), max. 500 mA at 24 V DC, short-circuit proof. Direction for PTO channel 2. |
| Q0.7 | DO | 0.2–1.5* | PNP transistor output (group 2L), max. 500 mA at 24 V DC, short-circuit proof. Direction for PTO channel 3. |
| Q1.0 | DO | 0.2–1.5* | PNP transistor output (group 2L), max. 500 mA at 24 V DC, short-circuit proof. |
| Q1.1 | DO | 0.2–1.5* | PNP transistor output (group 2L), max. 500 mA at 24 V DC, short-circuit proof. |
| PE | PWR | 0.2–1.5* | Marked with the earth symbol on the device. Connect to earth or the protective conductor. |
| 0V | PWR | 0.2–1.5* | Reference of the 24 V supply. |
| 24V | PWR | 0.2–1.5* | 24 V DC ±20 %, reverse polarity and short-circuit protected. Power consumption {pwrDC}. |
| 1M | DI | 0.2–1.5* | For I0.0–I0.7. PNP devices (sourcing): 1M to 0 V. NPN devices (sinking): 1M to +24 V. |
| I0.0 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. Fast input: HSC0 track B, reset (mode 1/2/4), interrupt. |
| I0.1 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. Fast input: HSC0 clock or track A, interrupt. |
| I0.2 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. Fast input: HSC1 track B or direction (mode 3/4), interrupt. |
| I0.3 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. Fast input: HSC1 clock or track A, interrupt. |
| I0.4 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. Fast input: HSC2 clock or track B, HSC1 reset. |
| I0.5 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. Fast input: HSC2 track A, HSC0 start or direction (mode 2–4). |
| I0.6 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. Fast input: HSC3 clock or track B, HSC1 start. |
| I0.7 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. Fast input: HSC3 track A. |
| 2M | DI | 0.2–1.5* | For I1.0–I1.5. PNP devices (sourcing): 2M to 0 V. NPN devices (sinking): 2M to +24 V. |
| I1.0 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. |
| I1.1 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. |
| I1.2 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. |
| I1.3 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. |
| I1.4 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. |
| I1.5 | DI | 0.2–1.5* | Digital input 24 V DC, PNP or NPN, 3.5 mA. |
| VO− | VO | 0.2–1.5* | Reference of the built-in 24 V source. |
| VO+ | VO | 0.2–1.5* | Built-in 24 V DC source for sensors and field devices, max. {voI}. Do not connect in parallel with an external power supply. |
| ETH | ETH | – | 10/100 Mbit/s, auto-negotiation. Programming, Modbus TCP client/server, free TCP/UDP, firmware update. Factory IP 192.168.0.252. |
* Clamping range not stated in the manual, derived.
Getting started with the Kinco K6
The K6 is a compact PLC with Ethernet, two RS-485 interfaces and slots for BD cards. This guide applies to the K606-24, K606EA-30 and K608-40 CPUs and takes you from first power-up to your first own program: supply, connect via Ethernet, create and download a project in KincoBuilder, store values retentively. You need expansions, the clock, program protection and diagnostics as soon as the machine grows or is in operation.
Check the rating plate: models with D before the output type (…DT, …DR) need 24 V DC (±20 %). Models with A (K606-24AR, K608-40AR) are supplied directly with 100–240 V AC.
Connect the earth terminal (earth symbol next to the supply) to PE.
Only wire and plug in BD cards with the supply switched off.
Route control and communication cables at least 100 mm away from power cables.
Do not use the permanent backup area for values that change often. The EEPROM only tolerates 1 million write cycles (see step “Store data retentively”).
1Power supply and first startRequired
DC units: 24 V to 24V, minus to 0V. AC units: L and N. On both, connect the earth terminal to PE.
Transistor outputs (…DT) need their own supply per group: 1L+/1L− and 2L+/2L−. Relay outputs (…DR, …AR) switch whatever you connect to their common terminal 1L, 2L …, 24 V DC or 230 V AC.
The CPU has a built-in 24 V output VO+/VO− for encoders and field devices. It supplies max. 300 mA on the K606 and on DC units, max. 500 mA on the K608-40AR.
You can also switch between RUN and STOP without a PC: the switch is located in slot BD0 under the cover. Remove the cover and slide the switch to the RUN or STOP side.
Status LEDs on the front
LED State Meaning Run (green) on PLC running (RUN) Run (green) flashing Firmware update mode Stop (red) on PLC stopped (STOP) Comm. (green) flashing Data traffic on PORT1/PORT2 Err. (red) on Error in the program or in the CPU, details in KincoBuilder In one place the manual gives 500 mA for the 24 V output for all CPUs (ch. 2.2.3.10), in the table in appendix 8.2 300 mA (K606 and DC units) or 500 mA (AC units K606EA/K608). We state the lower value here.
If the CPU detects a fatal error during operation, it goes to STOP by itself.
Show wiring “Supply 24 V DC”Show wiring “Supply 230 V AC”Show wiring “Supplying the outputs”
Source: Manual ch. 2.2.3.1, 2.2.3.10, 3.1.3, 3.1.4, appendix 8.2
2Inputs and outputs of the modelsOptional
All inputs are 24 V inputs for PNP or NPN sensors, in groups via 1M, 2M, 3M. The K606EA only has group 1M. Transistor outputs switch PNP (positive switching), max. 500 mA per output. Relay outputs switch 2 A per contact, max. 8 A per group.
High-speed counters and pulse outputs are on the same terminals on all CPUs: counters on I0.0–I0.7 (HSC0/HSC1 up to 200 kHz), pulses on Q0.0, Q0.1, Q0.4 (up to 200 kHz) and Q0.5 (10 kHz), direction on Q0.2, Q0.3, Q0.6, Q0.7. Relay CPUs cannot output pulses.
CPU Supply DI DO Analog BD slots K606-24DT 24 V DC 14 10 transistor – 1 K606-24DR 24 V DC 14 10 relay – 1 K606-24AR 100–240 V AC 14 10 relay – 1 K606EA-30DT 24 V DC 14 10 transistor 4 AI, 2 AO 2 K608-40DT 24 V DC 24 16 transistor – 2 K608-40DR 24 V DC 24 16 relay – 2 K608-40AR 100–240 V AC 24 16 relay – 2 The analog channels of the K606EA measure 4–20 mA, 0–20 mA, 1–5 V or 0–10 V (12 bit, 0.3 %). For current, switch in the measuring resistor: connect R* to *+.
All CPUs have 2 × RS-485 (PORT1, PORT2) and 1 × Ethernet, program memory 8k instructions, V area 16 KB.
Show wiring “PNP devices on DI”Show wiring “NPN devices on DI”Show wiring “Encoder on HSC0 (A/B)”Show wiring “Sensor 2-wire 4–20 mA”
Source: Manual ch. 1.4, 2.2.3.7, 2.2.3.8, 2.2.4
3Install KincoBuilderRequired
The K6 is programmed with KincoBuilder in ladder diagram (LD) or instruction list (IL) according to IEC 61131-3. The software is free of charge and includes a simulator you can use to test programs without a PLC.
You can connect via Ethernet (recommended) or via one of the two RS-485 ports with a USB-RS-485 adapter. Both are suitable for programming and monitoring; the firmware update runs via Ethernet.
Back up your project before switching to a new software version. A project saved with a newer version cannot always be opened in the older one (experience from the forum).
New instructions sometimes need matching firmware in the CPU. If the two do not match, the CPU reports error 29 (see step “First run and diagnostics”).
Source: Manual p. II (Programming Software Acquisition), ch. 6.1, 6.4, 6.5; spstiger forum: "Kinco Builder 8.5"
4Connect the PC via EthernetRequired
Ex works, the K6 is set to the IP address 192.168.0.252. KincoBuilder can only reach the CPU in the same network. So give your PC an address such as 192.168.0.10 with the mask 255.255.255.0: the first three numbers are the same, the last one differs.
Alternatively, leave the PC address as it is and change the IP address of the CPU found directly in KincoBuilder. According to the manual, this also works across network boundaries.
Connection in KincoBuilder
Connect the PC and CPU with a patch cable (directly or via a switch), switch on the CPU.
In the project tree, double-click Double click scan Ethernet or select Tools › Communications › Scan Net.
Select the CPU found with right-click › Communicate with.
If KincoBuilder shows a warning, set Use TCP or Use UDP under Communications and repeat.
If the scan finds nothing: under Communications › Adaptor, select the network card the CPU is connected to and search again.
Via RS-485: adapter to A1+/B1− (PORT1) or A2+/B2− (PORT2), select Use COM Port in Communications, enter the COM port from Device Manager and click Start. KincoBuilder then takes over the parameters of the CPU.
You set the PC address in Windows under Network Connections › Adapter › Properties › Internet Protocol Version 4 (TCP/IPv4). Change it back afterwards for the company network.
Show wiring “Ethernet”Show wiring “Modbus RTU on PORT1”
Source: Manual ch. 2.2.3.3, 6.6.1
5Create and download a projectRequired
KincoBuilder creates a new project with a preset CPU, according to the manual K606-24DT. So check in the hardware configuration that your model is in the first row. If the CPU does not match, the PLC reports error 20.
In the hardware configuration you also define which values the outputs take in STOP. In STOP, the CPU immediately outputs these values.
The first network in ladder diagram: normally open contact %I0.0 switches coil %Q0.0. First program
File › New Project, choose location and name.
In the project tree, double-click Hardware. If the first row does not show your model: delete the CPU with a right-click.
In the HW Catalog, double-click your model, e.g. K608-40DT. Set the output values for STOP here too.
Enter BD cards and expansion modules, see step “Expansions and BD cards”.
Write a small network, e.g. I0.0 switches Q0.0.
Project › Compile All (F7). Errors are listed in the Output window; double-click jumps to the location.
Optionally test in the simulator.
PLC › Download (F8). KincoBuilder compiles automatically beforehand.
Debug › Start PLC (or switch to RUN), then press F6 for monitoring mode.
You can set the CPU for new projects permanently under Tools › Options.
Write names of variables, blocks and programs without umlauts and without ß. The software core does not support Unicode; on the device this leads to error 29, even though the simulation runs (spstiger forum: "Fehlermeldung 29").
A project consists of the .kpr file and the folder next to it with the subroutines. Always copy and back up both together (spstiger forum: "HMI+PLC (MK070E) Modbus RTU Master").
Help on any instruction: select the instruction and press F1.
Show wiring “PNP devices on DI”Show wiring “Valve and lamp on DO”
Source: Manual ch. 2.2.3.1, 6.2, 6.3.1, 6.4, 6.5, 6.6.2
6Expansions and BD cardsOptional
Up to 14 expansion modules fit to the right of the CPU (K6 modules, according to the manual also K5 modules). The modules are connected from left to right with the supplied ribbon cable; the CPU is always on the far left. In KincoBuilder you enter them under Hardware in exactly this order, otherwise the PLC reports error 21.
BD cards plug into the front of the CPU, under the cover: the K606 has one slot (BD0), the K606EA and K608 have two (BD0, BD1). Communication cards (KB6-CAN, KB6-2COM) only fit in BD0, I/O cards (KB6-4DI, KB6-4DO) in both.
Install modules and cards
Switch off the supply.
Place the modules on the DIN rail, only then plug in the ribbon cables (otherwise the interface can break).
Plug the cable from the output of the left module into the input of the right one, push the modules close together, close the covers.
With many modules or more than 0.5 m bus length, connect pin 9 and 10 of the expansion interface on the last module with a short wire jumper.
Remove the cover and plug the BD card into BD0 or BD1.
In KincoBuilder under Hardware, enter the modules in plug-in order and the BD cards in the matching slot.
Current consumption on the expansion bus (examples from the manual)
Module +5 V +24 V (relay coils) CPU supplies (all K6) 1500 mA 360 mA K680 supplies in addition 1000 mA 250 mA K621-16DX (16 DI) 210 mA – K622-16XR (16 relays) 210 mA 120 mA K623-16DR (8 DI, 8 relays) 210 mA 60 mA K631-04IV (4 AI) 172 mA – (10 mA external) K633-04IV (2 AI, 2 AO) 166 mA – (10 mA external) If the CPU's current is not sufficient, insert the K680 power supply module in between or use a second CPU. Calculation example in the manual, appendix 8.5.
If a BD card is plugged in but not configured, the CPU uses default values: KB6-4DI at IB30 (BD0) or IB31 (BD1), KB6-4DO at QB30 or QB31; KB6-2COM with PORT0 and PORT3 as Modbus RTU slave, address 1, 9600 bit/s, 8N1; KB6-CAN with 500 kbit/s.
The KB6-CAN has a switchable 120 Ω termination (switch ON). It turns the K6 into a CANopen master for up to 64 nodes, e.g. Kinco servos.
KB6-CANKB6-2COMK680 power supply module
Source: Manual ch. 2.2.3.2, 2.2.3.4, 5.1, 5.2, 6.3.2, 6.3.3, appendix 8.3
7Store data retentively⚠ CautionRequired
Do not write the permanent area cyclically
The permanent area is located in the EEPROM. According to the manual, it only tolerates 1 million write cycles; the CPU automatically writes every change in this area into it.
If a variable in it is written cyclically, this limit is reached quickly. Example (calculated): one write per second, and it is over after just under 12 days.
Therefore: store setting values via Reten and switch off the permanent area or only use it for values that rarely change.
Setting values and counter values are usually stored in the V area. Without configuration, they are lost after switching off. In the hardware configuration, you define under Reten which area is retained: up to 16 KB in the V area and the counters (C area).
A CR2032 coin cell keeps this data in RAM. According to the manual, it lasts at least 3 years without supply. Reading and writing are as fast and as unlimited as with normal variables.
I/OCommRetenOthersData Maintain Data Area Start Length Range 1 VB 1000 500 Range 2 VB 0 0 Range 3 C 0 0 Simplified view: here VB1000–VB1499 are retained. Counter values (C) in another range if required. Set the retentive area
In KincoBuilder, open Hardware, tab Reten.
Enter data area, start address and length. Example: VB from 1000, length 500 bytes. VR200, for example, occupies VB200–VB203.
In the Others tab, set the permanent area to All of the above areas are NOT used if you do not need it.
Download the project. In the download dialog, only set “Clear the Retentive Ranges in V area after downloading” if you really want to delete the stored values.
Memory types of the K6
Memory Range Use Retentive (battery, RAM) V area up to 16 KB, C area 512 bytes, set under Reten Setting values, counter values, everything that changes Permanent (EEPROM) VB3648–VB4095 and/or VB15360–VB16383, under Others only for values that rarely change SM0.7 reports the battery status: TRUE = battery voltage low. Ideally, output this bit as a message, e.g. on an operator panel.
The options in the Others tab: compatible with K3 (VB3648–VB3902), with K5 (VB3648–VB4095), with K6 (VB15360–VB16383), both areas together or none.
Source: Manual ch. 2.2.3.5, 2.2.4.8, 6.6.2; spstiger forum: "Einstellwerte dauerhaft speichern"
8Clock and batteryOptional
The K6 has a real-time clock that runs on the coin cell when the supply is switched off. On first use, set it with an active connection in KincoBuilder under PLC › Adjust CPU Clock….
In the program, READ_RTC, SET_RTC, RTC_R and RTC_W read and write the clock. READ_RTC returns BCD values; RTC_R returns decimal values with FMT = 0 (FMT = 1 = BCD).
Replace the battery (CR2032, 3 V)
Switch off the supply. Retentive data is lost during the replacement if it has not been backed up (derived).
Release the latches on both sides with a small screwdriver and remove the cover.
Remove the silicone adhesive on the battery, lever the battery out at the bottom left.
Insert the new battery into the holder on the right first, then press it in; secure it again with silicone on the left.
Dispose of the old lithium battery according to local regulations.
The battery typically lasts 5 years, at least 3 years without supply. If it is weak, KincoBuilder reports this under PLC Information › General Errors, in the program SM0.7 = TRUE.
According to the manual, the clock deviates by less than 5 minutes per month (25 °C).
Daylight saving time: if Windows changes the clock automatically, the KincoBuilder help says to also set “Using Daylight Saving Time” when setting the CPU clock.
Source: Manual ch. 2.2.3.6, 2.2.4.8; KincoBuilder help ch. 6.11
9Protect and back up the programOptional
If you want to prevent anyone from reading out your program, set the option Set the CPU to “Upload Disabled” during download. The program is then stored encrypted and can never be uploaded again. Store your own project safely beforehand.
You get a program from the CPU with PLC › Upload. With an unstable connection or large projects, use the variant Upload (breakpoint resume); it continues after an interruption. The same exists for the download.
Options in the download dialog
Option Effect Set the CPU to “Upload Disabled” Program encrypted, upload no longer possible Clear the Retentive Ranges in V area after downloading deletes the retentive data (V and C area) Clear the Permanent Backup Ranges after downloading deletes the permanent area in the EEPROM Not automatically compiled before downloading not recommended, only applies until KincoBuilder is restarted Do not use the CPU password protection in KincoBuilder. If the password is forgotten, the CPU cannot be reset. The upload lock is the better protection (spstiger forum: "Passwortschutz bei Kinco HMI+SPS").
Source: Manual ch. 6.6.2; spstiger forum as mentioned
10First run and diagnosticsRequired
Firmware update via Ethernet
Only necessary if a new instruction requires it (error 29). You can get the firmware file from our support.
Connect the CPU via Ethernet, open Tools › PLC Firmware Upgrade (Common)… in KincoBuilder and read the help in the window.
Set Communications…, then Select Firmware File… and choose the file. The matching model and versions appear under File Information.
Enter Upgrade Mode: after about 2 seconds, Run flashes quickly.
Start Upgrading: the CPU erases, writes and verifies the memory; the progress is shown at the bottom of the window.
After the success message, restart the CPU.
Error patterns on the LEDs and in KincoBuilder
Indication or code Meaning Remedy Run off, Stop on, Err. flashing fatal error, CPU in the safety subsystem in KincoBuilder Tools › Clear (for fatal errors only) Run off, Stop on, Err. on serious error, program stops running View the error in KincoBuilder under PLC Information Run on, Err. on general error, program keeps running View the error in KincoBuilder 20 CPU in the hardware configuration does not match the device Correct the CPU under Hardware 21 Expansion modules in the hardware configuration faulty Compare order and models with the actual setup 29 unknown instructions in the program at power-up Firmware does not match the KincoBuilder version, or umlauts in names If the update aborts and Run keeps flashing, click Start Upgrading again. If the CPU can be connected after a restart but cannot be put into update mode, leave it switched off for a while and try again.
SM2.0 defines whether the CPU restarts after a fatal error (1) or stays in the safety subsystem (0, factory default after power-up). Communication may fail in the safety subsystem.
Other error codes are described in the KincoBuilder online help (Help › Contents and Index).
Source: Manual ch. 2.2.3.1, 6.7, 6.8
Revision 1.0 · 29.09.2026 · Source: Kinco K6-Series PLC User Manual (03/2024); KincoBuilder help; practical tips from the spstiger community forum (forum.spstiger.de) on KincoBuilder, cited at each step. The manufacturer manual and applicable standards take precedence; installation and commissioning by a qualified electrician only.
Dimensions and mounting
The K6 mounts on a 35 mm DIN rail or with two M4 screws. The drawing follows Kinco's dimensional drawings; the drilling pattern is available as a printable template.
All models
| Item | Rating | W × H × D (mm) | Hole spacing (mm) | Hole ⌀ (mm) | Weight (kg) |
|---|---|---|---|---|---|
| KIP.K606.24DT | K606-24DT · 24 V DC, 14 DI, 10 DO transistor | 128 × 94 × 76 | 2 holes in mounting lugs, top left and bottom right: 118 × 104 (measured from the Kinco drawing) | M4 | – |
| KIP.K606.24DR | K606-24DR · 24 V DC, 14 DI, 10 DO relay | ||||
| KIP.K606.24AR | K606-24AR · 100–240 V AC, 14 DI, 10 DO relay | ||||
| KIP.K6.K608.40DT | K608-40DT · 24 V DC, 24 DI, 16 DO transistor | 186 × 94 × 73 | 2 holes in mounting lugs, top left and bottom right: 176 × 104 | M4 | – |
| KIP.K6.K608.40DR | K608-40DR · 24 V DC, 24 DI, 16 DO relay | ||||
| KIP.K6.K608.40AR | K608-40AR · 100–240 V AC, 24 DI, 16 DO relay | ||||
| KIP.K6.K606.EA.30DT | K606EA-30DT · 24 V DC, 14 DI, 10 DO, 4 AI, 2 AO |
Mounting step by step
1Installation site and space requirement
The K6 is an open device (IP20) for the control cabinet: −10 to 55 °C, 10–95 % humidity non-condensing, up to 2000 m altitude, pollution degree 2.
Leave at least 60 mm free above and below the devices and allow at least 100 mm mounting depth. When mounted vertically, the permissible ambient temperature drops by 10 K.
Width of the row = sum of the housing widths, because the modules butt directly against each other. Example: K608 (186 mm) with two digital modules (75 mm each) = 336 mm (calculated).
Route control cables at least 100 mm away from power cables; don't let chips or wire ends fall into the ventilation slots.
2Mount on the DIN rail
The units fit 35 mm DIN rails (7.5 or 15 mm high). When mounted horizontally, the CPU is on the left; when mounted vertically, at the top.
Pull the sliding latch at the bottom of the unit downwards (unlock).
Hook the unit into the rail at the top and press it on at the bottom.
Mount all modules this way and slide them next to each other, only then plug in the ribbon cables of the expansion interface. Otherwise the interface can be damaged.
Push the modules close together, press the latches upwards (lock).
3Alternatively with M4 screws
Each device has two mounting lugs for M4 screws, top left and bottom right. The holes are 5 mm inside the side edges and 5 mm above or below the housing; vertically they are 104 mm apart on all K6 devices.
The drilling template above is available for each CPU, to print at actual size.
Horizontal hole spacing: K606 118 mm (measured), K606EA/K608 176 mm, digital modules 65 mm, analog modules 40 mm.
Drill the holes according to the layout plan, CPU on the left or at the top. In a row, each module starts right at the edge of the previous one.
Screw the units on one after the other; use a spring washer and flat washer to prevent loosening due to vibration.
Plug in the ribbon cables of the expansion interface and place them in the cable duct on the left of the module.
4Dimensions of the expansion modules
The expansion modules have the same height (94 mm), depth (73 mm) and vertical hole spacing (104 mm) as the CPUs. So all mounting holes of a row lie on two lines.
Digital modules K621, K622, K623 and power supply K680: 75 × 94 × 73 mm, holes 65 × 104 mm.
Analog and temperature modules K631, K632, K633: 50 × 94 × 73 mm, holes 40 × 104 mm.
According to the manual, K5 expansion modules fit as well; their dimensions are in the K5 manual.
5Terminal blocks and wiring
The screw terminal blocks can be unplugged, which makes wiring and replacing units easier. The pin assignment is printed under the flap.
Unplugging: open the flap, place a screwdriver vertically in the notch in the middle of the block and lever the block outwards.
Plugging in: place the lug at the back of the block into the holder, align the pins and press the block in flush.
Tighten the terminal screws to the correct torque; the manual does not state a value.
Show wiring “Supply 24 V DC”Show wiring “Supplying the outputs”
Revision 2.0 · 30.09.2026 · Source: Kinco K6-Series PLC User Manual (03/2024), ch. 4 and 5; Kinco dimensional drawings K606, K608/K606EA and expansion modules (2023). The manufacturer manual and applicable standards take precedence; installation by a qualified electrician only.
Stuck?
Our support helps you free of charge. Tell us what you are planning and which model you use – via the contact form, by email or in the community forum.
Contact formEmail support@spstiger.deAsk in the community forum
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Downloads
K6 user manual, dimension drawings (2D and 3D) and wiring diagrams of all CPUs and expansion modules: