INFICON LDS3000 Modular Leak Detector Interface description - Manual (Page 49)

Fieldbus Communication 49
6 Fieldbus Communication
6.1 Preface
In order to use Fieldbus Communication with LDS3000, you need an INFICON Bus-
Module BM1000 connected to the I/O port of the LDS3000.
When setting up the PROFIBUS communication you need to use the GSD file
provided by INFICON.
The following file contains the communication characteristics for the PROFIBUS:
HMSB1811.GSD
You can download the file at
http://www.anybus.de/
6.2 Setup
► Select the „Bus modul“ at the control unit (CU1000): M ENU > S ETTINGS > S ETUP >
I NTERFACES > A CCESSORY > D EVICE SEL . > B US > OK.
► Select the field bus at the control unit (CU1000): M ENU > S ETTINGS > S ETUP >
I NTERFACES > B US M ODULE > ADDRESS .
Information Attention: This value do not come into effekt until a restart of the leak
detector (power off / power on)!
6.3 Process Data Mapping for Cyclic Data Transfer
6.3.1 Write Process Data (PLC-> Leak Detector)
This data is sent periodically from the programmable logic controller to the leak
detector:
Byte Bit Name Meaning
Similar to
PLC Input
Similar to
RS232 ASCII
cmd. Similar to
RS232 LD
cmd.
1
0 (not used)
1 Zero
Transition 0 -> 1: 0x02 = Zero on
Transition 1 -> 0: 0x00 = Zero off
ZERO *ZERO 6
2 Clear
Transition 0 -> 1: 0x04=Clears errors and
warnings
Clear *CLS 5
3 Start/Stop
Transition 0 -> 1: 0x08= Start
Transition 1 -> 0: 0x00= Stop
Start / Stop
*START /
*STOP
1, 2
4
CAL intern
Transition to 0: 0x00 = Cancel internal
calibration
Transition to 1: 0x10 = Start internal
calibration
CAL intern *CAL:INT 4
5
6
CAL extern
Transition to 0: 0x00 = Cancel external or dyn.
calibration
Transition to 1: 0x40 = Start external or. Dyn.
calibration
Transition to 2: 0x80 = Acknowledge closed
test leak
CAL extern /
CAL dynamic
*CAL:EXT 4
7