A
Hi,
We have a problem in connecting Modbus devices to AC800M (PM856 CPU). Infact we have used RS232 to RS485 convertor and the TX , RX & GND of Convertor are connected to RX,TX & GND of PM856CPU. The poll time in the Modbus setting of PM856CPU is set to 0.
We have used MBConnect & MBRead to connect & read from Slave device. For both commands the status is being displayed as 1, but we are unable to connect to the slave device.
Kindly suggest us to overcome the above problem.
Regards
Anil
We have a problem in connecting Modbus devices to AC800M (PM856 CPU). Infact we have used RS232 to RS485 convertor and the TX , RX & GND of Convertor are connected to RX,TX & GND of PM856CPU. The poll time in the Modbus setting of PM856CPU is set to 0.
We have used MBConnect & MBRead to connect & read from Slave device. For both commands the status is being displayed as 1, but we are unable to connect to the slave device.
Kindly suggest us to overcome the above problem.
Regards
Anil