Specifications

SQ: 7-28
RS3: Service Quick Reference Guide
Input/Output
Port I/O Card RS-422/RS-232 LEDs
LEDs
Meaning
DS4 Receive Data: Indicates that data is being received from the PLC device.
DS3 TX Data: Indicates that data is being sent to the PLC device.
DS2 30V Fuse Blown: Power fuse F1 is blown.
DS1 Card Good: Voltages are within tolerances.
RS-422/RS-232 Port I/O Card Jumper Positions
Jumper
Position Effect
HD1A--D
A
B
Use Communications Port A
Use Communications Port B
HD2A--B
MOD
TERM
Port I/O Card is a Modem
Port I/O Card is a Terminal
HD3
S
M
Single P oint: One PLC
MultiDrop: Several PLCs
RS-422/RS-232 Port I/O Card Fuse
Fuse
FRSI
Part No.
Littelfuse
Part No.
Schurter
Part No.
Characteristics
F1 G50382--0014 273.500
MSF
034.4216
1/2 A 125 V Plug-In