36 List of Figures
WAGO I/O System 750
750-940 EnOcean RS-485 Gateway; 868 MHz
Manual
Version 1.3.0, valid from FW/HW Version 01/01
4.2.3
Resetting the Device
If register 1 is written with a “1,” the EnOcean Gateway generates a response
report and then automatically initiates a software-controlled restart.
E.g., if a new Modbus address is filed on the module via the register
communication, the module must be restarted before the new Modbus address
can be used for Modbus communication.
When the device is reset, all ESP3 reports are deleted.
When the device is restarted, the DIP switch settings are read in again.
4.2.4
Resetting the Report Buffer
If register 2 is written with a “1,” the EnOcean Gateway deletes all ESP3 reports
from the receiving and sending buffer, resets the register value to “0” and
generates a response report.
4.2.5
Process Input Data
The process input data reflects the received ESP3 report from the EnOcean radio
module, the received ESP3 reports are always filed by the EnOcean Gateway in
an internal buffer. After the process output data is read from a register, if another
ESP3 report is pending, it is automatically filed in the register.
Register 3 (see Table “Register Layout”) signals the number of ESP3 reports
present in the EnOcean Gateway to the host.
Register 4 (see Table “Register Layout”) signals the length of the current ESP3
report in the EnOcean Gateway receiving register to the host.
Instead of regularly polling the module status via the Modbus master, registers 3
and 4 can be read out together with the process input image. This can reduce
data traffic at the system bus.
If there is an error, the corresponding error code as specified in the Modbus is
read out. The error code can accept values from 0x01 to 0x04.
