14
SHM-NPR
Appendix A: RS-232 Pinout
The table below shows how the RS-232-C ports of the SHM-NPR and SHM-NPR/RJ
are pinned out. Please note that even though the control and voltage signals are
listed, they are used only to help power the units; only the data signals are carried
across the line.
PIN
CIRC.
DESCRIPTION
FUNCTION
DIRECTION
1
AA
Protective Ground
Ground
N/A
2
BA
Transmitted Data
Data
To DCE
3
BB
Receive Data
Data
From DCE
4
CA
Request to Send
Control
To DCE
5
CB
Clear to Send
Control
From DCE
6
CC
Data Set Ready
Control
From DCE
7
AB
Signal Ground
Ground
N/A
8
CF
Data Carrier Detect
Control
From DCE
9
—
+12 VDC
Voltage
From attached device
20
CD
Data Terminal Ready
Control
To DCE
Note: Pins 1 & 7 are tied together inside the unit, as are Pins 4 & 5 and Pins 6, 8, & 20.
Summary of Contents for SHM-NPR
Page 17: ...NOTES...
