Honeywell Enraf 977, Инструкция по эксплуатации

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Troubleshooting
Page 14
Instruction manual 977 Tank Side Indicator
Display Meaning of error (continued)
UNKNOWN ITEM ID RECEIVED The message of the level gauge contains an unknown item ID
ERROR EXECUTING ???? When a gauge command is executed, but the gauge response message is
not as expected (i.e error message from gauge), this message is displayed,
where ???? is replaced by the actual given gauge command, i.e.:
CALIBRATE GAUGE, LOCK TEST, etc.
The above error messages will automatically clear when the condition leading to the error disappears.
*) These are typical communication errors. The following actions can be taken to solve the problem:
•
Check cabling between Tank Side Indicator and level gauge
•
Reset level gauge (by means of RS command)
•
Either replace TSI or XPU-2/i.s. board (with servo gauges) or ICU_IS2 board (with 970/971/93
SmartRadar)
If the level gauge detects an error in the communication with the Tank Side Indicator, there will be no reply to the
Tank Side Indicator. The communication errors are counted and can be requested by item
0L .
Item Name Description
0L Number of TSI errors Indexed item, 4 elements of 3 bytes.
Tank Side Indicator communication error counter.
1
st
element : number of BCC errors
2
nd
element : number of parity errors
3
rd
element : number of framing errors
4
th
element : number of time-out errors
The maximum count is 999; more errors are not registered