How To Use Serial Communication; Sh200-R; Communication Specifications; Settings - Ulvac G-TRAN Series Instruction Manual

15. How to use serial communication （SH200-R）
This chapter explains RS-232C and RS-485 of the serial communication type SH200-R.
15.1.

Communication specifications

Maximum cable length 15m
Maximum Connections: 1
9600/19200/38400 bps
※1: RS-485 standard allows communication up to 1200m.
When exceeding 30m, check the remote host's specifications and the
operating environment, such as noise, before use.
※2: Switch to the receiving status within 20msec after sending the data.
※3: The timeout until receiving data should be 150msec or more.
※4: After receiving the data, send the next data after an interval of 50msec
or more.
15.2.

Settings

Connection Diagram

RS-232C Connection Diagram
An example of RS-232C connection is shown below. The host side is a D-sub 9-pin.
This unit Pin No.
RxD
Txd
GND
RS-485 without terminating resistor (Example)
Example) USB serial interface USB-485 manufactured by NATIONAL INSTRUMENTS.
This unit Pin No.
RS485+
RS485-
RS-232C
Two-wire type
Half-duplex
Asynchronous
ASCII code
Data bit length 8 bit
Stop bit 1 bit
No parity
4
6
14
12
10
GND 14
RS-485
Maximum cable length 30m
Maximum Connections:
32(including host)
9600/19200/38400 bps
Host side Pin No.
2
3
5
Host side Pin No.
4
8
5
9
1
36
※1
RxD
TxD
GND
RxD+
TxD+
RxD-
TxD-
GND