2 Functions of Devices in DVP-PLC 2. COM ports (COM1: RS-232; COM2: RS-485) in SA/SX/SC series MPU and COM ports (COM1: RS-232; COM2: RS-232/RS-485/RS-422) in EH2/EH3/SV2 series MPU support Modbus ASCII/RTU communication format with speed of up to 115,200bps. COM1 and COM2 can be used at the same time. COM3: RS-232/RS-485 in EH/EH2 series MPU supports Modbus ASCII communication format with speed of up to 38,400bps. The communication port (COM3: F232RS-232/RS-422) in EH3/SV2 series MPU supports ASCII/RTU communication format with speed of up to 115,200bps. COM1: For slave stations only.
Supports ASCII/RTU communication format, adjustable baud rate with speed of up to 115,200bps, and modification on data length (data bits, parity bits, stop bits). EH3/SV2 series MPUs can be as a masters or slaves, and supports ASCII/RTU communication format, adjustable baud rate with speed of up to 115,200bps, and modification on data length (data bits, parity bits, stop bits). COM2: For master or slave stations. Supports ASCII/RTU communication format, adjustable baud rate with speed of up to 115,200bps, and modification on data length (data bits, parity bits, stop bits). COM3: EH2 series MPUs can be used as slaves stations only.
Supports ASCII communication format (data bits, parity bits, stop bits) 7, E, 1, adjustable baud rate with speed of up to 38,400bps. COM2 or COM3 cannot be used for slave stations at the same time. EH3/SV2 series MPUs can be as a masters or slaves, and supports ASCII/RTU communication format, adjustable baud rate with speed of up to 115,200bps, and modification on data length (data bits, parity bits, stop bits). Communication Format Settings: COM1: 1. Communication format is set in D1036. b8 ~ b15 do not support the communication protocol of COM1 (RS-232) Slave. 2. The communication format in EH3/SV2 series MPU is set in D1036.
b8 ~ b15 do not support the communication protocol of COM1 (RS-232) Slave/Master. 3. Communication setting in M1138 remains. 4. M1139 is set in ASCII/RTU mode COM2: 1. Communication format is set in D1120. Communication protocol of COM2 (RS-232/RS-485/RS-422) Master or Slave 2. The communication format in EH2 series MPU is set in D1120. COM2 (RS-485 or DVP-F232 card/DVP-F422 card) will occupies the communication protocol of original COM2 (RS-485) Master or Slave. 3. Communication setting in M1120 remains 4. M1143 is set in ASCII/RTU mode COM3: 1. Communication format is set in D1109.
b0 ~ b3 and b8 ~ b15 do not support the communication protocol of COM3 (DVP-F232 card/DVP-F485S card) Slave 2. The communication format in EH3-SV2 is set in D1109. b0 ~ b3 and b8 ~ b15 do not support the communication protocol of COM3 Slave or Master. 3. Communication setting in M1136 remains DVP-PLC Application Manual 2-81