YOKOGAWA SSC60D User Manual

Table 7.1.1-1 Types and Functions of Status Display LEDs of Common Modules (T
able continued)
Modules name Indicator Meaning of ON Meaning of OFF
ESB bus
bus repeater
module
STATUS Hardware normal Hardware abnor-
mal
RCV Receiving ESB bus frames Not receiving
SND Sending ESB bus frames Not sending
OPT RCV-1 Optical transmission frame is now being received. Not receiving
OPT SND-1 Optical transmission frame is now being sent. Not sending
NODE-1 DIP switch is set to 1. DIP switch is set
to 0.
*1: On SCP461/SCP451 processor module, when the LED turns on, it flashes.
Table 7.1.1-2 Types and Functions of Status Display LEDs of I/O Modules and Communication Mod-
ules
Modules name Indicator Meaning of ON Meaning of OFF
Analog input/output mod-
ules
Digital input/output modules
STATUS Hardware normal Hardware abnormal
ACT Performing input/output Not performing
DX Set to dual-redundant oper-
ation
Set to single operation
Digital input/output modules 1 to 16 ch Input/output ON Input/output OFF
1 to 8 ch Output ON Output OFF
1 to 4 ch Output ON Output OFF
Communication module
ALR1
11
ALR121
STATUS Hardware normal Hardware abnormal
ACT
Controlling status / ready for
communication
Standby status / communi-
cation stopped
DX
Dual-redundant operation
normal
Single operation/
Dual-redundant operation
abnormal
RCV-1 Receiving RS1. Standby status
SND-1 Sending RS1. Standby status
RCV-2 Receiving RS2. Standby status
SND-2 Sending RS2. Standby status
Ethernet communication
module
ALE1
11
STATUS Hardware normal Hardware abnormal
ACT
Controlling status / ready for
communication
Standby status / communi-
cation stopped
DX Always off
RCV Receiving data Standby status
SND Sending data Standby status
LINK Link established Link not established
<7.1 Routine Maintenance of Safety Control Unit > 7-4
IM 32Q06C10-31E 4th Edition : Jan.30,2015-00

YOKOGAWA SSC60D Specifications

General

Brand	YOKOGAWA
Model	SSC60D
Category	Control Systems
Language	English