Output of measured values
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A00760_09_E00_00
HBM: public
ML77B
10
Output of measured values
The ML77B outputs an error status to the link and to the internal serial interface
to enable detailed indications on potential errors to be given during the start-up
phase.
Use the EST? and IDS? commands to request detailed error descriptions.
See below for the list of potential error messages:
Value
Meaning
0
“OK”
1
”Overload chan <n.m>”
1
”Amplifier ignored instruction, chan <n.m >”
1
”Link error, chan <n.m > ”
1
”Signal not available, chan <n.m >”
1
”Chan <n> missing”
1
”Wrong configuration, chan <n> ”
1
”Wait for link master”
1
“The configuration of chan <n> doesn`t match the parameterisation”
1
“The configuration of slot 0 is missing”
10.1 Measured values as output data for the ML77B
Representation of measured values as output data for the ML77B
In 24-bit mode the measured values of the subchannels are represented in the
memory as follows:
The 24-bit measured value is located in the upper 3 bytes of the double word in
Motorola format.
The LSB represents the status of the measured value (should always be set to
zero).
Memory map in the PLC:
Byte address in
PLC memory
MSB
LSB
0
Byte
2
Byte
1
Byte
0
Status
meas. val. subchannel 1
