Pro-face GLC300-TC41-24V, Operation Instructions Manual

Page: 6 / 10

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
This serial port is used for the GLC's RS-232C and RS-422 interface cables.
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.>
1
13
14
25
* Pin # 14 can be used for the power supply for the user's optional equipment connected
to the GLC.
*
• Pin # 14 is not protected, so be sure to use it only within its rated range.
• Be sure to connect the GLC's Pin # 7 (SG) terminal to the other (Host) 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 100
Ω
is added between RDA and RDB.
• When the GLC 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).