Serial(COM1 / COM2)

3.1 Features
(1) Protocol Auto Scan
PLC-S scans below protocol for HMI automatically without protocol setting. (Baud rate and basic parameter should be setup for matching with HMI)
CIMON HMI Protocol
MODBUS/RTU Slave
Programming Tool Connection (CICON)
If Special program below is registered, Protocol Auto Scan is not operated with RUN Mode.
MODBUS/RTU Master
Protocol Program

(2) Communication insulation(COM2)
COM2 Port is only for RS485
COM2 Port has insulation and is effective as following:
Protect Comm. quality and electric shock from electric potential difference.
Protect Comm. quality from Noise and Surge.

(3) Comm. port independent.
COM1 and COM2 works independently that makes flexible network.
Two different protocols work with COM1 and COM2 simultaneously.
Special programs works with COM1 and COM2 independently.
Ex) two protocols from each Comm. Port can work independently without interrupt.

(4) Programming Tool Bridge (CICON)
Connect to CICON through Ethernet port.
Please refer to PLC-S Ethernet Communication manual.

3.2 CIMON HMI Protocol
CIMON HMI Protocol supported.

3.3 MODBUS/TCP MODBUS/RTU (Slave)

Open

(1) MODBUS Memory mapping function is supported in [PLC Parameter]

(2) This function is used to assign some parts of internal memory to MODBUS Memory.

(3) The MODBUS Memory Map is used the same with MODBUS/TCP supported from Ethernet.

3.4 MODBUS/RTU Master

Open

"MODBUS/RTU Master Program" is selected to use this function.

The Base and Slot must be Local and Slot0 each. Slot 0 means CPU in PLC-S.
(Special program which is used in Expansion module starts with ‘Slot 1’)

Channel Mode

3.5 Protocol Program

"Protocol Program" is selected to use this function.
The Base and Slot must be Local and Slot0 each. Slot 0 means CPU in PLC-S.
(Special program which is used in Expansion module starts with ‘Slot 1’)
Channel Mode