Seneca S6001-RTU, User Manual

Page: 184 / 210

USER MANUAL – Z-TWS4/Z-PASS2-S/S6001-RTU
184
- RESULT : -2, when called with ENABLE=FALSE
-1, in case of any failure
0, if the process is still running
1, if the process has successfully finished
2, if timeout has expired
5, if MBUS_READ_DATA or MBUS_WRITE_RAW FB is running
- ERROR : this parameter is meaningful when RESULT=-1; possible values are:
0: none
-1: invalid arguments (input parameters)
-2: M-Bus protocol error
This FB can be used to send configuration commands to the slaves;
for example, to set the slave to primary address 8, the following values shall
be given:
C_FIELD = 53 (hex)
CI_FIELD = 51 (hex)
DATA = 01 7A 08 (hex)
DATA_LEN = 3
19.1.9 MODEM_CTRL
The MODEM_CTRL FB sends a generic AT command to the GSM modem and receives the
corresponding response.
When first called, the FB runs a process which starts sending the command;
on subsequent calls, it only checks if the process has finished its job.
The FB has the following input parameters:
- SERIAL_PORT : this parameter is not used (it is still present only for
compatibility reasons); it can be set to '' (empty string)
- COMMAND : AT command to be executed
- TIMEOUT : timeout, in seconds
- @ENABLE : TRUE -> FB is executed
FALSE -> FB is skipped
The FB has the following output parameters:
- RESULT : -2, when called with ENABLE=FALSE
-1, in case of any failure
0, if the process is still running
1, if the process has successfully finished