VM600 networking manual MAVM600-NET/E 8 - 11
Edition 9 - February 2018
MPC4 card
SETTING UP A MODBUS CONNECTION (CPUM SW VERSION 067 OR EARLIER)
Refer to the VM600 machinery protection system (MPS) hardware manual for additional
information on the connectors and interfaces supported by a CPUM / IOCN card pair.
These files can be modified if required by editing them with a VT100 terminal (or emulator
from the Windows environment). See 2.3 Modbus configuration files for additional
information.
NOTE: The mbcfg.x files and the mbcfg.tcp2 file are only required to be edited if you
need to change the communication parameters.
Each file is organised in seven columns (see Figure 8-7):
The registers for analog values and discrete values are numbered sequentially and in
parallel. The configuration file is scanned, with the numbering of both sets of registers starting
at 1 (addressed as 0). Each time an analog register declaration or a discrete input is
encountered, the register number (current number) is incremented.
Slot This is the number of the slot occupied by the DAU (data acquisition
unit, that is, the card) in the VM600 rack.
It can have a value of between 3 and 14.
DAU Indicates the type of card in the slot:
MPC = a MPC4 card.
Output Defines the channel and/or output of the card in question.
See Section 8.6.
Type Specifies whether the (analog) value returned is the actual measured
value or the full-scale setting defined for the output in question:
• VAL = Measured value
• FSD = Full-scale value.
Sts/Not Defines whether the discrete values concerning the output in question
are requested or not:
• STS = Values requested (NB: STS = status)
• NOT = Values not available.
ANALOG. REG.
NO.
Register used for analog values concerning the output in question.
DIGITAL REG.
NO.
Register used for discrete (digital) values concerning the output in
question.