Geist Watchdog Wi, Инструкция по эксплуатации

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Geist Watchdog Wi Instruction Manual 76
© 2017
GM1212 Geist Watchdog Wi Instruction Manual
Function 06: Preset Single Register & Function 16: Preset Multiple Registers
To set the relay outputs over Modbus, first set the relay activation mode must be set to
Modbus only. Do this in the web interface, at the bottom of the Digital IO Configuration
page. The master must then send a Preset Single or Preset Multiple Register request
packet.
Preset Single and Multiple Registers
Register Name Description Units Range
49001 Relay K1
Relay 1
Activation:
1=active,
0=inactive
uint16 0-1
49002 Relay K2
Relay 2
Activation:
1=active,
0=inactive
uint16 0-1
RTU Framing
The example below shows a typical Query/Response from a Watchdog Wi.
Response Sample
Slave
Address
Function
Code
Count
Bytes of
Data
Register
Data
Msb Lsb
Register
Data
Msb Lsb
Register
Data
Msb Lsb
CRC 16
“Lsb”
CRC 16
“Msb”
02 04 06 00 00 00 00 00 01 B5 A3
Slave address 2 responds to Function Code 4 with six bytes of hexadecimal data and
ends with CRC16 checksum.
Register Values:
40001 = 0000 (hex)
40002 = 0000 (hex)
40003 = 0001 (hex)
Watchdog Wi Channel Pairs
Alternate Channel Pair Communications
Most Watchdog Wi system deployments operate well with the out-of-the-box default
settings. There are, however, instances where excess RF energy in a facility crowds the
default channels. For this reason, the Watchdog Wi system was designed with a set of