ZFR1800 Series Wireless Field Bus System Technical Bulletin 57
ZFR1811 Router and WEFCs
Use Table 15 to identify symptoms and possible causes. Use Table 16 to identify
the possible causes and steps to remedy the causes.
Table 15: Identifying Symptoms and Possible Causes
Symptom Identification Possible Cause Code
All WEFCs toggle offline to
the Metasys system.
The Metasys Event Log indicates one or more offline
events for all of the WEFCs.
RW1, RW2, RW3
A single WEFC is toggling
offline to the Metasys
system.
The Metasys Event Log indicates one or more offline
events for the WEFC.
RM1, RW4, RW5, RW6
The SIGNAL STRENGTH LED on WEFC’s ZFR1811
Router (or any router in the path of the coordinator)
indicates a weak signal (one flash) or no signal (no
flashes).
RW5, RW8, RW9, RW10,
RW11
The NAE/NCE cannot
discover the WEFC on the
MS/TP trunk.
Metasys system cannot discover the WEFC. RH1, RM1, RM2, RM3, RM4,
RM5, RW6, RW12
WEFCs do not come
online.
ZFR1811 Router LED is steady OFF. RH1, RH2, RH3, RM2
The ZFR1810 Coordinator
Wireless LED shows ON
steady or OFF steady.
The SIGNAL STRENGTH LED on WEFC’s ZFR1811
Router is OFF steady.
RM6
The SIGNAL STRENGTH LED on WEFC’s ZFR1811
Router is ON steady.
RW11
The ZFR1811 Router does
not join the wireless
network.
The ZFR1811 Router LED flashes once every
5 seconds.
RW12, RM3, RW10
The ZFR1811 Router signal
quality is weak.
The SIGNAL STRENGTH LED indicates a weak
signal (one flash) or no signal (no flashes).
RW4, RW7, RW10
All WEFCs in an existing,
running network suddenly
go offline.
• All WEFCs report OFFLINE at the NAE/NCE.
• Affected ZFR1811 Router’s Signal Strength LEDs
indicate not a member of a network (off steady
with 1 flash every 10 seconds)
• WEFCs lose control of temperature in controlled
space.
RW13, RW14
The WEFC’s FC/SA BUS
LED flashes and then
stays OFF.
The WEFC’s FC/SA BUS LED flashes and then stays
OFF.
RH1, RH2, RH3, RH4, RM8
The WEFC’s FC/SA BUS
LED is steady ON.
The WEFC’s FC/SA BUS LED is steady ON.
RH4, RM8
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