Description of the I/O Modules LION System
EN1Z-0921GE51 R0709
40
Description of the I/O Modules
Common Features
Switches located on the Terminal Socket
Feature Function
Service
button S1
(pluggable I/O
modules,
only)
• LED test, see section "Troubleshooting"
on page 74
• LONWORKS service button functionality
for L
ONWORKS Bus I/O modules
Hex switch
S2
• Module addressing for Panel Bus
I/O modules
LEDs located on the I/O Module
Feature Function
Service LED
(yellow)
• Service information, see section
"Troubleshooting" on page 74
Power LED
(green)
• Information on power supply, see
section "Troubleshooting" on page 74
For the location of these elements, see figures of the
relative modules.
Analog Input Modules
Types of Analog Input Modules and Terminal
Socket
Type Description Housing
CLIOP821
Panel Bus analog input
module
Light gray
CLIOL821
L
ONWORKS Bus analog input
module
Dark gray
XS821-822
XSU821-822
Terminal socket Light gray
Table 42 LION Analog Input Modules
Features
• 8 analog inputs
• Sensor-break and short-circuit detection, see section
"Troubleshooting" on page 74.
21
34
Fig. 58 CLIOP821A Analog Input Module with terminal
socket
Legend
1 Service button S1
2 Hex switch S2
3 Service LED
4 Power LED
Functionality of service LED and power LED: see Table 77
to Table 79 on page 78 and following.