Rockwell Automation 1775-S5_SR5,D17756.5.5 User Manual PLC-3 FAMILY I/0 - Manual (Page 14)

Scanner Hardware and Installation
Chapter 1
1-5
DH/DH+ Status Indicators
The five indicators labeled XMTG, RCVG, RDY, ERR, and DIS
(Figure 1.2) show you the status of the DH or DH+ channel.
Indicator Color When this led is on, (the scanner is)
XMTG green transmitting a message.
RCVG green receiving a message.
RDY green ready to transmit a message.
ERR red programming or communication error detected.
DIS yellow DH/DH+ connectors are disabled or duplicate
DH+ station address if blinking.
When the scanner is polling, both the XMTG and RCVG LEDs turn on.
Figure 1.2
Indicator Locations for 1775ĆS5 and 1775ĆSR5 Scanner Modules
Thumbwheel switch
1775ĆS5
Scanner
1775ĆSR5
Scanner