GHM Delta OHM PMBsense-A, Руководство по эксплуатации

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PMsense
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V1.0
Note : after sending the DP1 command, the instrument remains with the proprietary protocol.
Send the command SM to activate the MODBUS-RTU protocol immediately, or power cycle the
instrument.
RS485 communication parameters:
Command Reply Description
CMBn &| Sets the Baud Rate:

1200 if n=0

2400 if n=1

4800 if n=2

9600 if n=3

19200 if n=4

38400 if n=5

57600 if n=6

115200 if n=7
Default : 19200 (n=4)
RMB & n| Reads Baud Rate setting
CMPn &| Sets parity and stop bits:

8N1 if n=0 [No parity, 1 stop bit]

8N2 if n=1 [No parity, 2 stop bits]

8E1 if n=2 [Even parity, 1 stop bit]

8E2 if n=3 [Even parity, 2 stop bits]

8O1 if n=4 [Odd parity, 1 stop bit]

8O2 if n=5 [Odd parity, 2 stop bits]
The number of data bits is fixed to 8.
Default
: 8E1 (n=2)
RMP & n| Reads the setting of parity and stop bits.
CMWn &| Sets waiting time after transmission with MODBUS-RTU
protocol:

Immediate reception if n=0 (violates protocol)

Waiting 3.5 characters if n=1 (respects protocol)
Default : Immediate reception (n=0)
RMW & n| Reads the setting of waiting time after transmission with
MODBUS-RTU protocol.
PM measurement settings:
Command Reply Description
CPLSn &| Sets the PM measurement mode:

Continuous if n=0

At cyclic intervals if n=1
Default : At cyclic intervals (n=1)
RPLS & n| Reads the setting of the PM measurement mode.
CPLPn &| Sets the cycle interval for the measurement mode at cy-
clic intervals.
The number of seconds must be greater than 70, in or-
der to allow the sensor to take the measurement.
Default : 300 (=5 min)
RPLP & n| Reads the setting of the cycle interval for the measure-
ment mode at cyclic intervals.