Selection Of Interfaces And Operating Modes; Configuration Of Interfaces - Data Bits/Block Check Character (Bcc) - HEIDENHAIN iTNC 530 HSCI Technical Manual

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10.7.2 Selection of interfaces and operating modes

Communication

between iTNCs

10.7.3 Configuration of interfaces

Character (BCC)

To disable or enable the RS-232-C/V.24 interface:

Select MP5000.

If the interface is enabled, you can select the following settings:

Call the MOD functions.

Choose the desired operating mode from the table.

For the following external devices

PC with HEIDENHAIN software TNCremo

Non-HEIDENHAIN devices such as printer, punch or PC

with other data transfer software

Disable data interfaces

0: No interface disabled

1: RS-232-C/V.24 interface disabled

Set both iTNCs to LSV2 protocol. The control from which you start the data

transmission is the master.

The PLC provides you with access to the data interfaces (EXT3).

To configure data format and the type of handshake in the EXT1/EXT2/EXT3/

EXT4 operating modes (EXT3/EXT4 only for the PLC):

Select machine parameter MP5020.x.

With bit 0 you determine whether transmission is to be with seven or eight

data bits. Transmission with seven bits is normally used; for printer interfacing

eight bits are required.

With bit 1 you can ensure that the BCC is not interpreted as a control

On the iTNC, numbers less than $20 are defined as control characters. If

calculation of the BCC produces a number less than $20, then a blank space

is sent in addition immediately before <ETB>. The BCC will consequently

always be greater than $20 and cannot therefore be interpreted as a control

10.7 Configuration of Interfaces

operating mode

EXT1 and EXT2