JT3U PLC

General parameters

Installation modeDIN 35 guide rail or screw fixed
Operating temperature0 °C ~ 50 °C
Storage temperature20 °C ~ 60 °C
Operating humidity10% RH ~ 90% RH (no condensation)
Air requirementsNon-corrosive, no dust
Operating VoltageDC24V ±10%
Working Current< 1A
Programming softwareGx-developer/gx-works 2
Maximum procedural steps32,000 steps
Port 0RS232: Program Download, man-machine interface communication; Programming Port Protocol, the default baud rate of 19200
Port 1RS485: man-machine interface communication, all kinds of instrument communication;
Default port protocol, default baud rate 19200, optional MODBUS- RTU/RS/RS2 protocol
Port 2RS485: man-machine interface communication, all kinds of instrument communication; default programming port protocol;
Default baud rate 19200, optional MODBUS-RTU/RS/RS2 protocol.
Port 3Can: Our PLC internal networking use
Digital inputDC24V NPN leak
Digital outputTransistors: DC24V NPN leaky (500mA) ;
Relay: dry electrocution (AC250V/DC30V, 3A)
Analog inputDefault 0-10V
Optional 0-20mA
NTC 10K (-40 °C ~ 150 °C) NTC 50k (-40 °C ~ 210 °C)
Analog output0-10V

Communication pin definition

9Pin FemalePin NumberRS-232RS-232
Port 11
2TX
3RX
4
5GNDGND
6
7
8
9
*RS-232 communication interface between Tx to Rx, Rx to TX, GND to GND
9Pin FemalePin NumberRS-485(1)RS-485(1)RS-485(2)RS-485(2)CANCAN
Port 2*11A+
2CANL
3CANH
4
5GNDGNDGNDGNDGNDGND
6B-
7
8B-
9A+
* 1: JK series Port2 is the plug-in terminal interface version. The pin definition is based on the screen print at the terminal.

The connection between the RS-485 communication ports is A+ to A+, B- to B-; if more than 2 devices are networked, a 120R terminal resistor needs to be matched.

The wiring between the CAN communication ports is CANH to the extension module CANH (multiple modules are connected together), CANL is connected to the extension module CANL (multiple modules are connected together), please be sure to use a shielded communication line to connect, and the length is not more than 500mm. If more than 2 devices are networked, a 120R terminal resistor needs to be matched.

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