Introduction
From RTE 34.05.01 it is possible to communicate over Ethernet channels with Robox controllers in modbus TCP mode.
The MODBUS TCP server is configured using the MODBUS.CFG file found in the MODBUS_DIR alias folder. Frome RDE version v3.54.0, an editor is available for creating the modbus.cfg file.
The IP address of the server is one of those specified on configurations 'IP networks'.
The configuration file is a text file.
From RTE 34.11.06, a number of functions are available to be able to manage a CLIENT.
From RTE 34.24.3, the ability to define up to 8 Modbus/TCP Server configurations has been added. Obviously the configuration files must have different port numbers from each other. The file names for the configurations are:
•MODBUS.CFG for the first one
•MODBUS_1.CFG for the second one
•MODBUS_2.CFG for the third one
•...
•MODBUS_7.CFG for the eighth one
From RTE 34.26.02 it is possible to define a watch dog of continuous access by any client within a maximum latency. Refer to the documentation of the modbus.cfg file for more information.
Related arguments
Modbus Alarms
Keywords Modbus
BAD_CONFIG.9 (0x200) |
To report the possible error in configuration of modbus.cfg |
SYS_FLAG.21 (0x00200000) |
Enable entry into the report of information regarding the communication |
SYS_FLAG.22 (0x00400000) |
Enable entry into the report of incoming messages in the communication |
SYS_FLAG.23 (0x00800000) |
Enable entry into the report of outgoing messages in the communication |
SYS_CFG.5 (0x00000020) |
If 1 enables direct use index 0 by definition of 'INPUT REGISTER' and 'HOLDING REGISTER' - NOT standard - . The standard says that index 1 of an input, coils, input register and holding register is the lowest index. Too bad it then starts at 0 in the modbus message to identify the first element. NOTE: This flag affects both the functionality of configuration-managed MODBUS server and MODBUS client management instructions. It has been verified that Siemens panels use the same index both in definition on HMI and at the transmission level. Therefore, it will be necessary to use this flag to align the definition on HMI and the definition in configuration. |
Mask of configured fieldbus slave channels |
