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8. Installation and testing operation
8-12
)
8.3.1 Daily check
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Table 8.3.1(A) Items of routine check
Items to be checked Contents Criteria of decision Action to take
Cable connection status
Release of
cable
Shall not be any release. Tighten the cable.
Module connection status
Release of
screw
Shall not be any release.
Tighten screw of
module.
RUN Flicker check
Flash (Lights-out means interface cut-off with
CPU).
See Appendix.
LAS Light on Check
LED of only one module among entire module of
network should be lighted (Lights of two or more
mean abnormal configuration of network).
See Appendix.
TOKEN Flicker check
Light off means abnormal (Duplicated station or
cable error).
See Appendix.
TX/RX Flicker check
Light off means abnormal (Hardware error of
module).
See Appendix.
LED
indication
FAULT Light off check
Regular flash means system error, and
intermittence flash means communication error.
See Appendix.
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Table 8.3.1(B) Items of routine check
Items to be checked Contents Criteria of decision Action to take
Cable connection status Release of cable Shall not be any release. Tighten the cable.
Release of
terminal screw
Shall not be any release.
Tighten screw of
terminal.
Connection status of
terminal block
Gap between
compression
terminals
Shall be relevant gap. Correct.
RUN Light on check Check power if light off. See Appendix.
TOKEN Flicker check
Light off means abnormal operation
(Duplicated station or cable error).
See Appendix.
TX/RX Flicker check
Light off means abnormal operation
(Duplicated station or cable error).
See Appendix.
FAULT Light off check
Intermittent flash means communication error
(Cable connection error, or terminal resistance
connection error).
See Appendix.
LED
indication
SYS FAULT Light off check
Regular flash means system error (Error code
is displayed in LED).
See Appendix.
8.3 Repair and check