HEIDENHAIN TNC 335 Technical Manual - Manual (Page 489)

7-110
TNC 360 4 PLC Modules 8/95
4.9.1 Module 9100: Assign data interface
Module 9100 assigns one of the interfaces (RS-232-C/V.24 or RS-422/V.11, for TNC 360 the
RS-232-C) to the PLC, configures the transfer parameters and switches the interface to receive
mode. The interface is also initialized and any fault indicators are reset. The data interface cannot be
used by the input/output program of the NC operator interface because it is assigned to the PLC.
The following constraints should be observed:
- The assignment of an interface to the PLC is canceled whenever the PLC program is transferred.
- Configuration for 19 200 baud is not possible. The baud rate is set in MP 9040. The data format is
7 data bits, one even parity bit.
Module call:
PS K/B/W/D Interface 0 = RS-232-C/V.24
(1 = RS-422/V.11)
CM 9100
If the module is incorrectly processed the interface is not assigned to the PLC and marker M3171 is
set.
Potential errors:
- The interface is already assigned by the input/output program of the user interface.
- The call parameters of the module are outside the permitted range.
- The required baud rate is not available because of the way the other serial interface is
configured. (19 200 baud).
4.9.2 Module 9101: Enable data interface
Module 9101 cancels the assignment of an interface to the PLC and makes it again available for the
user's interface input/output program. Interface receive readiness is canceled.
Module call:
PS K/B/W/D Interface 0 = RS-232-C/V.24
(1 = RS-422/V.11)
CM 9101
Marker M3171 is set if the assignment is not canceled.
Potential errors:
- The interface was not assigned to the PLC.
- The call parameters of the module are outside the permitted range.