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6.
HOW TO USE COMMUNICATION (RS-232C)
6.1.
Specifications
(1) System
: Half duplex
(2) Data bit length
: 8 bits
(3) Stop bit length
: 1 stop bit
(4) Parity
: None
(5) Code
: ASCII
(6) Baud rate
: Selectable from 1200, 2400, 4800 and 9600.
Refer to 3.2 "How to Set the DIP Switch" for the setting.
(7) Command transmitting interval
: recommended interval: 0.2seconds or more
This controller has updated pressure data every 0.2 seconds.
6.2.
Connecting the Communication Cable
Use the I/O connector (D-sub 37-pin) on the rear panel of the controller.
The table below shows the connection.
Table. 6-1 RS-232C Communication Cable Connection
I/O connector
Signal direction
PC-side
standard connector pin No.
(Dsub-9P)
Pin No.
Symbol
Meaning
29
SD
Send data
→
3
30
RD
Receive data
←
2
4
SG
Signal ground
5
*: The communication cable is not supplied with the gauge.