User Manual For - CONTROLLER/DATA RECORDER MultiCon CMC-99/141
7.11.4.
Examples of external output configuration
s
During the
External output
configuration the user should terminate communication
between the MultiCon and the SLAVE device.
7.11.4.1.
A
pplication of external output for protocol Modbus in the MASTER mode
See also:
Chapter 7.15.3. Modbus - MASTER mode
Task:
The task is to send data located in Logical channel 1 to a SLAVE device (address 5)
without scaling and restrictions.
Fig. 7.104. Connection diagram for Modbus MB2
Solution:
First we need to configure settings in the Modbus menu as it is shown in
Configuration of the Modbus Input in the MASTER mode.
Next we configure logical channels used to set values, which will be sent by RS-485 to the
output. To do this:
–
touch the screen and press the
Menu
button,
–
press the
Device configuration
button,
–
enter the
Logical channels
menu,
–
using the arrows in the top navigation bar, select any
Logical channel
such as 1,
–
in the
Name
parameter write
Set point value
,
–
Mode
parameter set as
Set point value
,
–
in the
Set point
value parameter write
50
,
–
for
Displaying
block parameters:
•
Format
parameter set as
numeric
,
•
Precision
parameter set as
0
,
•
in
Graph low
parameter write
0
,
•
in
Graph high
parameter write
65535
,
183
i
19
16
17
18
14
15
RJ-45
ETH
USB host
RS
-4
85
(2
)
RxD
A+
B-
13
10
11
12
9
A+
B-
GND
TxD
CTS
RTS
R
S
-2
32
+
R
S-
48
5
(3
)
19
Slot D - ACM Module
Port MB2
GND
B-
A+
GND
GND
Power supply
(depending on version)
1
2
8
5
6
7
3
4
SERVICE
+24V DC ±5%
(
I
max. = 200mA)
digital input
0/15..24V DC
RS-485
GND
GND
A+
B-
isolated
Slave device 1
Slave address: 5
Register: 1h
Register: 2h
Register: 4h
Baud rate: 19200 bit./sek.
Device name:Flowmeter
Registers:
Modbus settings:
Register: 8h
