Modbus TCP
The Modbus TCP interface is generally integrated in every HERMA 500 applicator, but must be activated in order to use it. For subsequent activation, please contact our customer service or via E-Mail under service-machines(at)herma.com.
You can view options already activated in Ihrem HERMA 500 in its "Imprint" menu.
Prerequsites
- The Modbus TCP interface is activated for your HERMA 500.
- The Modbus TCP interface is activated via parameter 625 in the „Extended settings“ menu.
- The Modbus TCP port is specified via parameter 626 in the „Extended settings“ menu.
- The IP address is specified via parameter 610 in the „Extended settings“ menu.
- The HERMA 500 is connected via Ethernet at X5 with a RJ45 connector.
For parameter settings, you must be logged in with operator level 4 (default setting „4444“)
V1 (until end of 2021)
V2 (Facelift) as of 2022
Read and write values
As soon as the client is connected to the server, you can read and write values. The register number always corresponds to the parameter number with a preceding "40". All registers are of the Holding Register type. Examples:
Parameter 100 „Start delay for 1st label“ can be reached under register 40100.
Parameter 200 „Stop delay for 1st label“ can be reached under register 40200.
When reading and writing range by range, note that registers that do not have a corresponding parameter return the value -1 (0xFFFF). An attempt to write to non-existent registers has no effect.