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The register block for the configuration of the customisable Modbus map consists of the registers 6001
(0x1770) to 6010 (0x1779). For the blockwise query of the measured values behind Modbus registers 3001
(0xBB8) to 3020 (0xBCB), the firmware accesses this configuration area and thus gets the information
which measured value/status registers are to be output. A maximum of 10 user-defined registers can be
mapped. The table below shows an example:
Registers ...
Dec
Function code 0x10
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
Tab. 7 Custom Modbus map example
5.5
Device Status Indication
If a critical error occurs, all Modbus values are set to NaN (according to IEEE754 for data type FLOAT32)
or to 0x8000 (INT16). It is possible to read out all status and error information via Modbus register 602
(0x259). Errors are displayed in bit-coded form. If an event is present, the corresponding bit is set to 1.
Measured values outside the measureing range are limited with the corresponding limit value.
Error Bits Description
Bit 0 Error: Hardware T-sensing
Bit 1 Error: Short circuit of T sensing element
Bit 2 Error: Open loop of T sensing element
Bit 3 Error: Short circuit of moisture sensing element
Error: Open loop of moisture sensing element
Bit 4
Warning: Polluted moisture sensing element or
Bit 5
Bit 6 Warning: Temperature below allowed working range Observe the lower working range limit
Bit 7 Warning: Temperature above allowed working range Observe the upper working range limit
Bit 8 Error: T sensing element defective
Bit 9 Warning: Moisture below allowed working range
Bit 10 Warning: Moisture above allowed working range
Bit 11 Error: Moisture sensing element defective
Bit 12 Error: Hardware moisture sensing
14
... with these
assigned measurands ...
Hex
Meas.
Unit
0x1770
Status
0x1771
T
°C
°C
0x1772
T
0x1773
T
°C
0x1774
aw
0x1775
x
ppm
ppm
0x1776
Saturation
0x1777
aw
0x1778
x
ppm
0x1779
Saturation
or heavy pollution
highly conductive oil
... map to registers ...
Type
Dec
Function code 0x03 / 0x04
-
INT16
3001
FLOAT32
3002
FLOAT32
3003
°F
FLOAT32
3004
°F
FLOAT32
3005
INT16
3006
-
FLOAT32
3007
-
FLOAT32
3008
FLOAT32
3009
FLOAT32
3010
%
FLOAT32
3011
%
FLOAT32
3012
-
INT16
3013
INT16
3014
%
INT16
3015
3016
3017
3018
3019
3020
Recommended action
Return the faulty unit to E+E for service
1. Clean sensing head acc. to cleaning instructions
2. Return the faulty unit to E+E for service
Return the faulty unit to E+E for service
1. Clean sensing head acc. to cleaning instructions
2. Return the faulty unit to E+E for service
1. Clean sensing head acc. to cleaning instructions
2. Return the faulty unit to E+E for service
Clean sensing head or oil is incompatible
Return the faulty unit to E+E for service
Observe the lower working range limit
Observe the upper working range limit
Return the faulty unit to E+E for service
Return the faulty unit to E+E for service
User Manual MOP301 Digital Moisture in Oil Immersion Probe
... mirrored from
source registers
Hex
Dec
0xBB8
602
0xBB9
1003
0xBBA
1004
0xBBB
1005
0xBBC
1006
0xBBD
4002
0xBBE
1035
0xBBF
1036
0xBC0
1141
0xBC1
1142
0xBC2
1137
0xBC3
1138
0xBC4
4068
0xBC5
4071
0xBC6
4069
0xBC7
65536
0xBC8
65536
0xBC9
65536
0xBCA
65536
0xBCB
65536
Hex
0x259
0x3EA
0x3EB
0x3EC
0x3ED
0xFA1
0x46E
0x46F
0x474
0x475
0x470
0x471
0xFE3
0xFE6
0xFE4
0xFFFF
0xFFFF
0xFFFF
0xFFFF
0xFFFF
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