Proline Promag 53 MODBUS RS485 Troubleshooting
Endress+Hauser 99
28 COMMUNIC. I/O 261 S: COMMUNICATION I/
O
$: # 261
No data reception between
amplifier and
I/O board or faulty internal
data transfer.
Check the BUS contacts.
No. # 3xx → System limits exceeded
32 TOL.COIL CURR. 321 S: TOL. COIL CURR.
$: # 321
Sensor:
Coil current is out of
tolerance.
#
Warning!
Switch off power supply before manipulating the
coil current cable, coil current cable connector or
measuring electronics boards!
Remote version:
1. Check wiring of terminals 41/42 → ä 42
2. Check coil current cable connector.
Compact and remote version:
If the error can not be resolved, please contact your
local Endress+Hauser service organization.
102 to 105 STACK CUR. OUT n 339
to
342
S: STACK CUR OUT n
$: # 339 to 342
The temporarily buffered flow
portions (measuring mode for
pulsating flow) could not be
cleared or output within 60
seconds.
1. Change the upper or lower limit setting, as
applicable.
2. Increase or reduce flow, as applicable.
Recommendation in the event of fault category
FAULT MESS. ($):
– Configure the fault response of the output to
"ACTUAL VALUE", so that the temporary buffer
can be cleared.
– Clear the temporary buffer by the measures
described under Item 1.
106 to 109 STACK FREQ. OUT n 343
to
346
S: STACK FREQUENCY
OUTPUT n
$: # 343 to 346
110 to 113 STACK PULSE n 347
to
350
S: STACK PULSE OUT n
$: # 347 to 350
The temporarily buffered flow
portions (measuring mode for
pulsating flow) could not be
cleared or output within 60
seconds.
1. Increase the setting for pulse weighting.
2. Increase the max. pulse frequency, if the
totalizer can handle a higher number of pulses.
3. Increase or reduce flow, as applicable.
Recommendation in the event of fault category
FAULT MESS. ($):
– Configure the fault response of the output to
"ACTUAL VALUE", so that the temporary buffer
can be cleared.
– Clear the temporary buffer by the measures
described under Item 1.
39 to 42 RANGE CUR. OUT n 351
to
354
S: CURRENT RANGE n
!: # 351 to 354
Current output:
The actual value for the flow
lies outside the set limits.
1. Change the upper or lower limit setting, as
applicable.
2. Increase or reduce flow, as applicable.
43 to 46 RANGE FREQ. OUT n 355
to
358
S: FREQ. RANGE n
!: # 355 to 358
Frequency output:
The actual value for the flow
lies outside the set limits.
1. Change the upper or lower limit setting, as
applicable.
2. Increase or reduce flow, as applicable.
MODBUS No. Device status message
(local display)
Cause Remedy (spare part → ä 107)
Register:
6859
Data type:
Integer
Register:
6821
Data type:
String (18 byte)
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