Plc Modules - HEIDENHAIN iTNC 530 HSCI Technical Manual

10.10.2 PLC modules

July 2013
With the following PLC modules you can control the data interfaces from the
PLC:
Modules 9100 and 9101: Assign/release the data interfaces

Module 9102: Interrogate the status of the interface

 Modules 9103 and 9104: Transmit and receive a string from the string
memory. The transmit and receive buffers for the PLC are 128 characters
long. Since every STRING ends with an END character, a STRING can only
be up to 127 characters long.
Modules 9105 and 9106: Transfer a block of binary values (bytes) from the

word memory
Module 9107: Read bytes from the receiving buffer without erasing the

buffer
STRINGS and binary data are transferred using ASCII characters.
Example: Transferring a binary block
Address Value
. .
B126 11111010
. 10000001
. .
. .
. .
When transferring binary data starting from the address B126, the ASCII
characters <F> <A> <8> <1> etc. are transmitted in sequence from the word
memory through the interface. Each byte contains two ASCII characters. The
transmitting and receiving buffers each hold 63 bytes.
10.10 Data Transfer by PLC
ASCII character
.
$FA
$81
1917