adccommunitymod (AutomationDirect) asked a question.
click to OP320A via modbus
Created Date: March 14,2017
Created By: dwise1
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Does anyone have an OP320A display that may be able to explain how to send data to it from a click plc? It is supposed to be able to communicate via modus bus but the addressing of the OP320A is very unclear. Any help from anyone would be greatly appreciated. If I could just see how to send a single bit to set a coil I believe the rest I could figure out. Thanks in advance.
Created Date: March 14,2017
Created by: dwise1
Does anyone have an OP320A display that may be able to explain how to send data to it from a click plc? It is supposed to be able to communicate via modus bus but the addressing of the OP320A is very unclear. Any help from anyone would be greatly appreciated. If I could just see how to send a single bit to set a coil I believe the rest I could figure out. Thanks in advance.
Created Date: March 16,2017
Created by: dwise1
Problem solved.
Created Date: July 26,2018
Created by: mbwilliamson
How did you solve it?
I'm using Click Port 2. Cable wired: OP DB9 2 , 3 , 5 to Click RJ12 4 , 3 , 1+6 respectively. I can communicate to the OP320 using a Modbus Slave Simulator MOD_RSSim using the same cable plugged into the Blue USB-RS232 RJ12 Click Programming Cable with all the registers working (Coil 'Outputs ' 0x , Holding 4x with Decimal and Float32). I can also communicate using the supplied OP320 Programming using a regular USB FTDI to RS232 cable. I 've tried changing comm parameters on Click and OP320 but nothing works - changing in the simulator and OP does work. All I get on the OP320 is "connecting... " when hooked to the Click.
So it would seem to be on the Click side.
Created Date: August 07,2019
Created by: Tim Pearson
I got the OP320A because I wanted it to send commands to the MODBUS-RTU 4 way relay module . These relays are able to activate a number of appliances around my house such as lighting. I can only send commands from my computer but I thought the OP320A would be able to do it instead. How do I program the OP320A?
Created Date: December 13,2019
Created by: Tim Pearson
Controlling the FX1N and FX3U with the OP320 HMI is easy, the FX1N and FX3U don't need any programming at all with gx developer. You just need to program the OP320 edit tool, start a new project, select model OP320-A, select Mitsubishi (FX) as the type of PLC connected. In the dialog editor you simply create a function key and change it to the "0 key ". Select "set coil " and select set coil C to 0. Select "reverse ". The FX1N and FX3U has relays that are labelled as "coils " C0 to C8. After you have uploaded this dialog screen to the OP320, when you press 0 on the OP320, the relay C0 activates.
Controlling the MODBUS-RTU 4 way relay module with the OP320, I havn't succeeded yet, but the OP320 edit tool does have an option for MODBUS RTU. It needs to be more flexible about the data strings it sends out. I have an open source MODBUS utility for the STM8S103, R421A08, R221A04 and R413D08 relay boards here .
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