User`s manual

Maxiflex T2 CPU User Manual 23 -© Omniflex
UMM124XBR04.pdf
module is set to anything other than 4000, then this compressed DIT
addressing feature is disabled (factory default).
To use this feature, write the value 4000 into the module 1 Start Address parameter
(at DIT address 64,080), and then fill in the table with the subsequent start addresses
required.
For example if the value 4100 is written to the Module 2 Start Address parameter (DIT
address 64081), then only 100 registers from Slot 1 will be accessible through the
Modbus port (from 4000 to 4099), regardless of the number of registers actually used
by the module in this slot.
CAUTION: This compression applies only to the addressing used by the Modbus
Master when accessing the data. DIT registers accessed through other ports are
unaffected by this configuration. This feature should be used with caution because the
register address seen through the Modbus Port will be different from the normal
register address as used by Omniset through the programming port example.
4.5.2 Conet/s (Peer-to-peer) Protocol
4.5.2.1. Default Conet/s Mode (19200 baud)
To select this mode switch 7 to “ON” and 8 to “OFF” on the serial port
address selection switch.
This port is then configured as a Conet/s port operating at 19200 baud (with
8 data bits, no parity and 1 stop bits.)
Switches 1 to 5 of the address switch set the communications address used
to access the T2 CPU through this serial port.
The internal software settable parameters for this port have no influence on
the operation of the port when switch 7 is on, and switch 8 is off.
This mode allows foolproof Conet/s communications to be established
quickly and easily.
4.5.2.2. Standard Conet/s Protocol Mode
The baud rate of the Conet/s protocol is settable through OMNISET/DITview
in the “Setup Serial Port” group in this mode.
In this mode, switch 7 and 8 of the serial port address switch must be OFF.
Switches 1 to 5 of the DIP switch set the communications address used to
access the T2 CPU through this serial port.
4.5.3 Custom User Protocol Mode
In order to use this advanced feature of the T2 CPU, the “User” Protocol type must be
configured in the “Setup Serial Port” configuration group of the Template file, and a
custom protocol driver must have been downloaded to the T2 CPU.
Both SW7 and SW8 must be switched off on the serial port configuration switch.
Consult the factory for available protocols, or for assistance in writing your own
protocol in EZIFORTH.
In this mode, the configuration switches 1-5 are unassigned by the T2 CPU, and may
be used by the custom serial protocol software downloaded.