mru SWG100 CEM, User Manual

Page: 76 / 155

MRU GmbH SWG 100 User Manual
Page 76 of 155
Connection of the external control via Modbus
A further option is, to control the external control via Modbus. To do this, follow steps must be done:
•
Connect the RS485 to Modbus converter to the Modbus connector found at the main pcb. A description
can be found in the chapter 7.4.
•
Set the external control: Open the menu point “General settings”:
E
XTRAS
/G
ENERAL SETTINGS
. Select the
menu- point “
E
XTERNAL CONTROL
”
→
M
ODBUS
.
•
The master writes a value on the address 6000, the value is the same than with external control via
digital or analog inputs:
Status
number
values
Description
0 Automatic sampling point switching
1 Analyzer is sampling the point SP1 (*1, *2)
2 Analyzer is sampling the point SP2 (*1, *2)
3 Analyzer is sampling the point SP3 (*1, *2)
4 Analyzer is sampling the point SP4 (*1, *2)
5 Analyzer is sampling the point SP5 (*1, *2)
6 Analyzer is sampling the point SP6 (*1, *2)
7 Analyzer is sampling the point SP7 (*1, *2)
8 Analyzer is sampling the point SP8 (*1, *2)
9 Analyzer is sampling the point SP9 (*1, *2)
10 Analyzer is sampling the point SP10 (*1, *2)
11 Analyzer is “stand - by” (*3)
12 Analyzer is “stand - by” (*3)
13 Analyzer is “stand - by” (*3)
14 Remote reset of all system alarms
15 Analyzer is “stand - by” (*3)
Configuration at the analyzer
1.
Open the path:
E
XTRAS
/G
ENERAL SETTINGS
.
2. Switch the menu- point “External control” from “ OFF ” to “ Relais ”/ “ 4x mA” or “1 x mA” (dependent from
the connected signal input.). When the external control is activated an arrow symbol will appear at the
title line.
3. If a valid input state (>0) is present, an arrow in the title line will appear. The analyzer is now slave and
will perform the measurement until it gets another command from the master unit. Some external control
settings can be configured. This can be found at the path:
E
XTRA
/G
ENERAL SETTINGS
then F2 = ext.crtl.
The user has the opportunity to set the zeroing time, suction/response time and stand-by purge time.