Host Link Unit Connections - Omron SYSMAC CV Series Operation Manual

RS-232C Connections
Connection Example
Host interface (RS-232C)
Pin
Connec-
tor hood
2
3
4
5
9

3-4-2 Host Link Unit Connections

Communications Port 1
Host Link Unit
connector pin no. t i
Connector hood Frame ground
1 Frame ground
2 Send data
3 Receive data
4 Request to send
5 Clear to send
Note 1. Ground the FG terminals of both the PC and the host computer to a a resis-
tance of 100 Ω or less. For details refer to the CV-series PC Installation
Guide and your host computer manual.
2. The following Connector and Connector Hood (both OMRON) are provided
with the CPU.
Connector
Connector hood
The following diagram shows connections between the PC and host computer.
Signal
FG
SD (TXD)
RD (RXD)
RS (RTD)
CS (CTS)
SG (GND)
Note 1. Connect the shield of the cable to the FG (connector hood) of the PC.
2. Pins 1, 6, and 8 on the PC are used when RS-422 is used. Leave them un-
connected when RS-232C is used.
The specifications for RS-232C connections to the Host Link Unit are described
in this subsection for ports 1 and 2. When RS-232C cable is used, a host com-
puter can be connected to only one PC.
Electrical characteristics: Conforming to EIA RS-232C
Direction of signal:
Maximum cable length:
Signal
FG
FG
SD (TXD)
RD (RXD)
RS (RTS)
CS (CTS)
XM2A-0901
XM2S-0911
Computer interface (RS-232C)
Shield
Viewed from the Host Link Unit.
15 m
Symbol
Input
---
---
No
Yes
No
Yes
Section 3-4
Signal
FG
SD
RD
RS
CS
SG
Direction of signal
Output
---
---
Yes
No
Yes
No
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