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31
2
Do not enable the analog expander output if the analog expander is not connected to the instrument, otherwise the
computer communications will become garbled.
E
Available in the PM172E.
5.10 Communications Setup Registers
Table 5-21 Communications Setup Registers
Port
Parameter
Register
Type
R/W
Range
Port #1
Communication protocol
2344
UINT16
R/W
0 = ASCII
1 = Modbus RTU
3 = DNP3.0
Interface
2345
UINT16
R/W
0 = RS-232
2 = RS-485
Address
2346
UINT16
R/W
1 to 247
Baud
rate
2347
UINT16
R/W
0 = 110 bps
1 = 300 bps
2 = 600 bps
3 = 1200 bps
4 = 2400 bps
5 = 4800 bps
6 = 9600 bps
7 = 19200 bps
Data
format
2348
UINT16
R/W
1 = 8 bits/no parity
2 = 8 bits/even parity
Flow control (handshaking)
2349
UINT16
R/W
0 = no flow control
1 = software (XON/XOFF)
2 = hardware (CTS)
RTS
control
2350
UINT16
R/W
0 = RTS is not used
1 = RTS is permanently asserted
2 = RTS is controlled by the meter
(asserted during the transmission)
Port #2
Communication protocol
2352
UINT16
R
0 = ASCII
1 = Modbus RTU
3 = DNP3.0
Interface
2353
UINT16
R/W
2 = RS-485
Address
2354
UINT16
R/W
1 to 247
Baud
rate
2355
UINT16
R/W
0 = 110 bps
1 = 300 bps
2 = 600 bps
3 = 1200 bps
4 = 2400 bps
5 = 4800 bps
6 = 9600 bps
7 = 19200 bps
Data
format
2356
UINT16
R/W
1 = 8 bits/no parity
2 = 8 bits/even parity
Reserved
2357-2358
UINT16
When changing the instrument address, baud rate or data format, the new communications parameters will take
effect 100 ms after the instrument responds to the master's request.
5.11 Analog Output Setup Registers
Table 5-22 Analog Output Allocation Registers
Channel
Registers (see Table 5-23)
Channel #1
3148-3150
Channel #2
3151-3153