User`s manual

This is GP’s serial port for RS-232C and RS-422 interface. Connect GP’s
host here.
3 Serial Interface
Recommended Connector: Dsub 25 pin plug XM2A-2501 <made by OMRON Corp.>
Recommended Cover: Dsub 25 pin Cover XM2S-2511 <made by OMRON Corp.>
Jack Screw XM2Z-0071 <made by OMRON Corp.>
• Use rough metric type M2.6 x 0.45p threads used to hold the cable’s
set (fastening) screws in place.
Recommended Cable: CO-MA-VV-SB5P x 28AWG <made by HITACHI Cable Ltd.>
• Since Pin#14(VCC)is unprotected, be sure to keep the output cur-
rent in the rated range.
• Be sure to connect this unit's SG/GND (Signal Ground) terminal to the
other unit's Signal Ground terminal.
When making a cable, please be aware of the following:
<For RS-422 Connection>
• The following pairs of pin #’s must be connected to each other
...#18 (CSB) <-> #19 (ERB)
...#21 (CSA) <-> #22 (ERA)
• When connecting the RS-422 cable and the #9 (TRMX) and #10
(RDA) points, a termination resistance of 100Ω is added between
RDA and RDB.
• When the GP is set as a Memory Link type and the cable type is
RS-422, a 4-line system must be setup.
<For RS-232C connection>
• Do not connect #9 (TRMX), #10 (RDA), #11 (SDA), #15 (SDB), #16
(RDB), #18 (CSB), #19 (ERB), #21 (CSA), and #22 (ERA).
Pin
#
Signal
Name
Condition
Pin
#
Signal
Name
Condition
1
FG
Frame ground
14
VCC
5V
±
5% output
0.25A
2
SD
Send data
(RS-232C)
15
SDB
Send data B
(RS-422)
3
RD
Receive data
(RS-232C)
16
RDB
Receive data B
(RS-422)
4
RS
Request send
(RS-232C)
17
NC
No connection
5
CS
Clear send
(RS-232C)
18
CSB
Clear send B
(RS-422)
6
NC
No connection
19
ERB
Enable receive B
(RS-422)
7
GND
Signal ground
20
ER
Enable receive
(RS-232C)
8
CD
Carrier detect
(RS-232C)
21
CSA
Clear send A
(RS-422)
9
TRMX
Termination
(RS-422)
22
ERA
Enable receive A
(RS-422)
10
RDA
Receive data A
(RS-422)
23
RESERVED
Reserved for future
use
11
SDA
Send data A
(RS-422)
24
NC
No connection
12
NC
No connection
25
RESERVED
Reserved for future
use
13
NC
No connection
1
13
14
25