M2I CTOP3M - Page 12

 Serial Interface (RS-422/485)
Connect main module to controller by RS-422/485 for communication.
Feature
Item
Contents
Protocol
Half Duplex, 5wires
Synch.
Asynchronous
Communication Distance
About 500M
Type of Connection
1:N(N≤31)
Control Code
ASCII Code or HEXA Code
Baud Rate
9600,19200, 38400, 57600, 76800, 115200bps
Data Type
Data Bit
7,8bit
Parity Bit
None, Odd, Even Parity
Stop Bit
1,2bit
Connector Pins and Signals
Type
Pin
Number
Signal
Direction
Contents
9 Pin terminal
(COM2)
1
RDA(RD+)
Input
Data Receive(+)
4
RDB(RD-)
Input
Data Receive(-)
6
SDA(SD+)
Output
Data Send(+)
9
SDB(SD-)
Output
Data Send(-)
5
SG
Signal Ground