GE Industrial Solutions ASTAT-CD Plus - Manual (Page 33)

6-2-2. ASCII protocol
To select this communications protocol, XP must be set to 0.
It is possible to operate the ASTAT-CD Plus from a host using standard ASCII characters. Two functions are available to be able to READ and
WRITE parameters.
Write Parameters to ASTAT-CD Plus:
To write data into a parameter, the command format is the following:
Request from host : :ssWxxxyyy➥
Response from the ASTAT : :ssWxxxyyy➥
where ‘:’ is a char to indicate the command start, ‘ss’ is the station address, ‘xxx’ (3 bytes needed) is the parameter number, and
‘yyy’ (3 bytes needed) is the value to write into the parameter. The ‘➥‘ is the return key to indicate the command stop.
Note: the parameters modification is not allowed while the motor is operating.
Read Parameters from ASTAT-CD Plus:
To read a parameter, the command format is the following:
Request from host : :ssRxxx➥
Response from the ASTAT : :ssRxxxyyyyy➥
where ‘:’ is a char to indicate the command start, ‘ss’ is the station address, ‘xxx’ (3 bytes needed) is the parameter number, and
‘yyyyy’ (5 chars response) is the value of the parameter. The ‘➥‘ is the return key to indicate the command stop.
Examples:
If we are trying to communicate with station 2:
- to start the unit, the command will be: :02W060000➥
- to stop the unit, the command will be: :02W060001➥
- to set the acceleration ramp time to 35 sec., the command will be: :02W005035➥
- to know which overload curve is selected, the command will be: :02R016➥ ; ( if, for instance the response is :02R01600004➥,
this means that the overload curve selected is IEC class 10 ).
The Table shown in 6-2-3 provides a complete reference for the parameters that can be controlled by the serial interface.
6. Appendix
6-5