TOPRE Series Hardware Manual
M2I Corporation
11-35, Simin-daero 327beon-gil, Dongan-gu, Anyang-si, Gyeonggi-do 14055, Korea, Tel: +82-70-465-3366, Fax: +82-31-465-3355, www.m2i.co.kr
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Chapter 5. External Device Interface
In order for the main unit to communicate with an external device, it is necessary to connect the two devices
by referring to the following.
5.1 Serial Communication Specifications
5.1.1 RS-232C
Items
Contents
Protocol
Full Duplex
Synch
Asynchronous
Communication Distance
About 15m
Type of Connection
1:1
Control Code
ASCII Code or HEXA Code
Transmission Speed
2400,4800,9600,19200,38400,57600,76800,
115200 bps
Data Type
Data Bit
7, 8 bit
Parity Bit
NONE, ODD, EVEN Parity
Stop Bit
1, 2 bit
Modular Jack
DSUB 9pin
5.1.2 RS-422/485
Items
Contents
Protocol
Full Duplex/Half Duplex
Synch
Asynchronous
Communication Distance
About 500m
Type of Connection
1:N (N ≤ 31)
Control Code
ASCII Code or HEXA Code
Transmission Speed
2400,4800,9600,19200,38400,57600,76800,
115200 bps
Data Type
Data Bit
7, 8 bit
Parity Bit
NONE, ODD, EVEN Parity
Stop Bit
1, 2 bit
Modular Jack
DSUB 9pin
5.1.3 COM Connector pin number and Signal name
Type
Pin No.
Signal
Direction
Meaning
9Pin Female
1
RDA(RD+)
Input
COM2: RS-422/485 Receive Data (+)
2
RD(RxD)
Input
COM1: RS-232C Receive Data
3
SD(TxD)
Output
COM1: RS-232C Send Data
4
RDB(RD-)
Input
COM2: RS-422/485 Receive Data (-)
5
SG
-
Signal Ground
6
SDA(SD+)
Output
COM2: RS-422/485 Send Data(-)
7
-
-
N/A
8
VCC GND
GND
Power Ground
9
SDB(SD-)
Output
COM2: RS-422/485 Receive Data (-)
