HBM ML77B, Руководство по эксплуатации

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Profibus
ML77B
A00760_09_E00_00 HBM: public
37
Signal gross bytes 0 and 1 (see sub‐section 11.2.5)
Signal net bytes 0 and 1 (see sub‐section 11.2.5)
Signal PV1 bytes 0 and 1 (see sub‐section 11.2.5)
Signal PV2 bytes 0 and 1 (see sub‐section 11.2.5)
Signal S5 bytes 0 and 1 (see sub‐section 11.2.5)
Signal “Bit mask remote contacts” bytes 0 and 1 (see sub‐section 11.2.5)
The measured values are read into catman as floating values. After conversion
into 32‐bit integer values, the data is available in the following sequence:
don't care Byte 2 Byte 1 Byte 0
MSB LSB
CAUTION
When ML77B output data is used, at least one other channel must also be
available in the configuration!
When the sampling rate of the CPxx is set to less than 60 Hz, the averaging
function is activated automatically. This causes the lowest 2 bits of byte 0 to be
lost!
9.2.10 ML77B output data (if ML77B has several subchannels, available
as from firmware‐version P2.00)
The output data for the ML77B sets the ML77B measurement data that can be
read by the CPxx or by catman. When the ML77B is operated with several sub­
channels, the output data set in the control is distributed among the individual
subchannels (signals are gross).
The number of subchannels can be adjusted with the command
PAR9990,<number of subchannels>. To adopt the set number of subchannels,
please turn the MGCplus off and then on again. In the Profibus configuration,
the number of subchannels is calculated from the length of the output data (see
subsections 11.2.1 and 11.2.5).