Laurel Electronics Modbus Protocol For Series 2 Laureate Digital Panel Meters, Counters, Timers & DIN-Rail Transmitters - Manual (Page 12)

- 12 -
FC04: Read Input Registers
Reads measurement values and alarm status. Returns values in M31 or 2C32 format without
decimal point (see Sec 11, p 16). The displayed system decimal point can be read with FC03 at
addr 0057. Use only high word Starting Register Addresses and an even number of Registers.
Register Address
Base 1
Std addr.
Base 0
PLC addr.
Meter or Analog Input
Transmitter Response
(M31 format)
Counter, Timer, or Pulse Input
Transmitter Response
(2C32 format)
00 01
00 02
00 03
00 04
00 05
00 06
00 07
00 08
00 09
00 0A
00 0B
00 0C
00 02
00 03
00 04
00 05
00 06
00 07
00 08
00 09
00 0A
00 0B
00 0C
00 0D
Hi word of Alarm status
Lo word of Alarm status
Hi word of Measurement value *
Lo word of Measurement value *
Hi word of Peak value
Lo word of Peak value
Hi word of Valley value **
Lo word of Valley value **
N/A
N/A
N/A
N/A Hi word of Alarm status
Lo word of Alarm status
Hi word of Item 1 value
Lo word of Item 1 value
Hi word of Peak value
Lo word of Peak value
Hi word of Valley value
Lo word of Valley value
Hi word of Item 2 value
Lo word of Item 2 value
Hi word of Item 3 value
Lo word of Item 3 value
* Net value for Scale Meter. ** Gross value for Scale Meter.
FC05: Write Single Coil: Action command to device
Output Address
Base 1 Base 0
Output
Value
Action Command
00 01
00 02
00 03
00 04
00 05
00 06
00 07
00 08
00 09
00 0A
00 0B
00 0D
00 0E
00 0F
00 10
00 02
00 03
00 04
00 05
00 06
00 07
00 08
00 09
00 0A
00 0B
00 0C
00 0E
00 0F
00 10
00 11
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00
FF 00 Device Reset (No Response)
Function Reset (Peak, Valley, latched alarms)
Latched Alarm Reset (only)
Peak Reset
Valley Reset
Remote Display Reset (Counters in Remote Display Mode)
Display Item 1 (Meters, Counters, Timers)
Display Item 2 (Counters, Timers)
Display Item 3 (Counters, Timers)
Display Peak (Meters, Counters, Timers)
Display Valley (Meters except Weight, Counters, Timers)
Meter Hold (output value = 00 00 resets Meter Hold)
Blank Display (output value = 00 00 resets Display Blank)
Activate External Input A (output value = 00 00 deactivates)
Activate External Input B (output value = 00 00 deactivates)