4 external interfaces, Serial interface (com1), External interfaces -19 – IDEC High Performance Series User Manual
Page 1335: Micro/ i specif ication s, Caution
WindO/I-NV2 User’s Manual
34-19
2 HG2G-5F, HG3G/4G
34
MICRO/
I Specif
ication
s
2.4 External Interfaces
●
Serial Interface (COM1)
CAUTION
• Make sure to turn off the power to the HG2G-5F, HG3G/4G before wiring each interface or
switching the terminating resistor selector Switch.
• Note that only one of the RS232C or RS485(422) interfaces can be used at one time. Wiring both
interfaces will result in failure of the HG2G-5F, HG3G/4G. Wire only the interface used.
Interface Specification
RS232C/485(422)
Connector
D-sub 9 pin (Plug)
Screw lock bracket
Inch Screw Thread #4-40 UNC
No.
Name
I/O
Function
Communication type
1
4W-RDA/2W-A
IN/INOUT
Receive Data (+) [4W]/ Send and Receive Data (+) [2W] RS485(422)
2
RD
IN
Receive Data
RS232C
3
SD
OUT
Send Data
RS232C
4
4W-SDA
OUT
Send Data (+) [4W]
RS485(422)
5
SG
-
Signal Ground
-
6
4W-RDB/2W-B
IN/INOUT
Receive Data (-) [4W]/ Send and Receive Data (-) [2W]
RS485(422)
7
RS
OUT
Request to Send
RS232C
8
CS
IN
Clear to Send
RS232C
9
4W-SDB
OUT
Send Data (-) [4W]
RS485(422)
1
5
6
9