Simex multicon cmc-141, User Manual

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User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-99/141
7.8.4. Logical Channels - Modbus mode
Modbus mode allows the user to configure the logical channel to:
– read/write the data from/to a SLAVE device transmitted over RS-485 Modbus RTU
(MultiCon device in
MASTER mode),
– read/write the data from/to logical channel of MultiCon device transmitted over RS-
485 Modbus RTU (MultiCon device in SLAVE mode) or by Ethernet port (Modbus
TCP/IP, MultiCon device in
SLAVE
mode)
This data stored in the logical channel in Modbus mode can be display on screen, processed
by other logical channels (e.g. by mathematical function or virtual relay) or it can be the data
source for controlling an output.
Fig. 7.46. Sample Logical channel setting in Modbus mode
The parameters of
Logical channel
in
Modbus
mode are (see
Fig. 7.46
):
–
Name
- it gives the name to the logical channel,
– Unit - to create a unit use the Scaling parameter in Processing parameter block
(more information see Chapter 7.8.1. Logical Channels - General settings ),
– Mode=Modbus - in this parameter the user selects source type of data for logical
channel,
–
Port
- this parameter allows the user to select a serial/ethernet port from the list. The
basic version of MultiCon has one built-in RS-485 port. The number of serial ports
can be increased by installing a communication module into slot D of the device.
This module offers 2 additional serial ports (one RS-485, and one RS-485/RS-232)
89
Port MB1, Multicon in MASTER mode for this port
Modbus address: '1', Device name: "SCK-10"
Input channel number: '1', HOLDING Register: '1h', size: 'b.0-15':
disabled
Hardware input
Hardware output monitor
Modbus
Set point value
Math function
Controller
Profile/timer
Profile/timer (cycle counter)
Date from other channel
Mode
Logical channel Device configuration MENU