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Contents
CS 31 Messaging
Memory Mapping
NCSA-01 Installation and Start-up Guide
This chapter describes the contents of the messages used for
communication between the CS 31 and the drive. Also introduced are
the addresses in the CS 31 master register areas into which the drive
data is written.
In the CS 31 system, the master sends messages cyclically to each
slave station. Each slave responds to messages with the correct
address and takes the actions requested by the master. The message
frames consist of a start/identification byte, one to three data sets, and
an error check byte.
Note: Only cyclic drive control and feedback data can be transmitted
via the CS 31 bus. The parameters of the drive cannot be read or
adjusted through the CS 31 bus.
The input/output memory system of the CS 31 master is divided
between the devices connected to the CS 31 bus. The memory areas
are as follows:
Binary inputs of CS 31 remote modules
Binary outputs of CS 31 remote modules
Word inputs of CS 31 remote modules
Word outputs of CS 31 remote modules
The NCSA-01 can be used either in Binary or Word Mode (see
parameter 03 MODULE ID in Chapter 5). The control data can be
modified by the CS 31 master program either on a bit (A XX,YY) or
word (AW XX,YY) basis, where XX is the address (station number) of
the NCSA-01 module and YY is the address of the variable. For
detailed information on selecting the appropriate mode, consult the
CS 31 Program Manual.
Chapter 6 – Communication
E00,00 ... E57,15
A00,00 ... A57,15
EW00,00 ... EW5,15
AW00,00 ... AW5,15
6-1
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