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4.6. RS485 SERIAL INTERFACE
Communication to the ID5001P, via the RS485 interface, makes use of MODBUS RTU protocol.
All the parameters available in the ID5001P menu system can also be accessed via the MODBUS
interface. The serial interface should be configured as follows:
9600 baud, 8 data bits, 1 stop bit, no parity
⚠ WARNING: Care should be taken when remotely controlling/configuring the unit via the
MODBUS interface as values set intentionally, or unintentionally, will immediately affect the
operation of the ID5001P. E.g. enabling relay inversion, although a useful test, will cause the
relay to switch and signal an event when no event is active.
If the ID5001P is powered from batteries, and LOW POWER MODE is enabled, then the RS485
interface will be disabled. If you require to use the RS485 interface while powered from batteries
then LOW power mode must be disabled, although be aware that this will significantly reduce
the battery lifetime.
4.6.1.
MODBUS REGISTER MAP
COILS
0
Log Values to SD card
1
Log FFT to SD card
2
Invert Relay Operation
3
Current Loop Enable
4
Current Loop IF Enable
5
High Pass Filter Enable
6
LED Flash Enable
7
Low Power Mode Enable
15
Pig Detected
16
Reset Detect Parameters
17
Reset Output Parameters
18
Erase Events
INPUT REGISTERS
0
Average Noise (AN) High
1
Average Noise (AN) Low
2
Average Value (AV) High
3
Average Value (AV) Low
4
Difference Level (DL) High
5
Difference Level (DL) Low
6
Power In-Band (PIB) High
7
Power In-Band (PIB) Low
8
Number of Events
14
Firmware Type
15
Firmware Revision
16
Event Year
17
Event Month
18
Event Day
19
Event Hour
20
Event Minutes
21
Event Seconds
22
CPU Temperature
23
Battery Voltage
25
Unit Serial No
ID5001P_5001_B00
Write 1 to enable or 0 to disable
Write 1 to enable or 0 to disable
Write 1 to enable or 0 to disable
Write 1 to enable or 0 to disable
Write 1 to enable or 0 to disable
Write 1 to enable or 0 to disable
Write 1 to enable or 0 to disable
Write 1 to enable or 0 to disable
Read Only – Pig detection status
Write 1 to reset detect parameters
Write 1 to reset output parameters
Write 1 to erase the stored events
Upper word (bits 31:16)
Lower word (bits 15:0)
Upper word (bits 31:16)
Lower word (bits 15:0)
Upper word (bits 31:16)
Lower word (bits 15:0)
Upper word (bits 31:16)
Lower word (bits 15:0)
0 - 99
5001
Major Rev ASCII (bits 15:8) Minor Rev (bits 7:0)
Selected event date
Selected event date
Selected event date
Selected event time
Selected event time
Selected event time
°C
mV
0 – 65535
Page 16 of 36
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