Technical data

Index Protocols and Communication Data List
B-16
P/N 7135049A
E 2007 Nordson Corporation
VBC_Siemens
Example 2 (Standard Index Protocol)
If the master sets Data index to 0 (zero) in the transmission data block, the
Nordson melter sets all Read data values to 0 (zero).
The master sets Data index to 0 (zero). Status of the Nordson melter is
System ready.
Transmission data block:
Melter control Command Data index Channel
number
Write data value Line speed value
(key-to-line) for motor
1 2 3 4
... 0 ...
Receive data block:
Status Acknowledge:
Data index
Acknowledge:
Channel number
Read data value
1 2 3 4 5 6
0001
hex
0 ... 0 0 0 0 0 0
Example 3 (Standard Index Protocol)
If the transmission data block is faulty, the Nordson melter sets all Read
data values to 0 (zero).
The master sets Data index to the faulty value 999. Status of the Nordson
melter is System ready and Index protocol error in the Data index.
Transmission data block:
Melter control Command Data index Channel
number
Write data value Line speed value
(key-to-line) for motor
1 2 3 4
... 999 ...
Receive data block:
Status Acknowledge:
Data index
Acknowledge:
Channel number
Read data value
1 2 3 4 5 6
4001
hex
999 ... 0 0 0 0 0 0