Communication with PLC devices by the WAGO company
The modular distributed system by the
WAGO company (
http://www.wago.com) is offering a wide variety of the communication options:
Modbus TCP/IP,
Modbus RTU,
Lonworks,
PROFIBUS,
PROFINET,
DeviceNet,
CanOpen ...
There are currently two basic component types available: the
750-3xx are the communication modules only and
750-8xx are programable stations (according to the
IEC 61131-3 standard).
Communication by the Modbus protocol
-
Modbus TCP/IP: Support
WAGO-I/O-SYSTEM 750, stations:
841/341/842/342.
-
Modbus RTU: support
WAGO-I/O-SYSTEM 750, stations:
812/312/815/315 (for
RS485) and
814/314/816/314 (for
RS232).
For this communication in the PROMOTIC system can be used:
For this driver, it is recommended to set the configurators:
The WAGO devices of the
750-8xx series also have the so-called
"Merkers" memory area, that begin at address
3000 hexa = 12288 dec. Due to the fact that this is the same area as the registers (in
Ro area) with address
512, this memory can be read:
- with recalculated address for registers or
- put the registers and the memory into two
PmaCommGroup objects and set different base address for each of them.
Communication by the BACnet protocol
Communication by the
BACnet protocol is supported by
WAGO-I/O-SYSTEM 750, station:
BACnet/IP-Controller 750-830.
For this communication in the PROMOTIC system can be used:
Free communication through RS232, RS485
The
WAGO-I/O-SYSTEM 750 allows to add the serial module to any communication or programable module (it is possible to use multiple serial modules simultaneously in one station). This interface allows to develop the necessary protocol (or to use the preset libraries for
Modbus RTU communication).
For this communication in the PROMOTIC system can be used:
Communication by other protokols
The communication
on the PROFIBUS, DeviceNet ... is accessible for the PROMOTIC application by the
OPC interface. The PROMOTIC application is the
OPC client and it communicates with the
OPC server. The
OPC server for this communication has to be purchased at the HW supplier.