bihl+Wiedemann 1249 - Page 98

AS-i/PROFIBUS Gateway PROFIBUS-DP
Subject to reasonable modifications due to technical advances Copyright Bihl+Wiedemann, Printed in Germany
Bihl+Wiedemann GmbH · D-68199 Mannheim · Phone +49-621-339960 · Fax +49-621-3392239 · Internet http://www.bihl-wiedemann.de
issue date 7.1.2002
96
The mailbox call has not been anwsered with the valid values, beause the toggle
bit has not been set.
Set of Toggle bit:
To get the input data again, the T-bit has to be reset aso.
If a mailbox command is used via PROFIBUS-DP V1, it is not necessary to use the
toggle bit.
Response
Byte 1 00
hex
Byte 2 00
hex
Byte 3 00
hex
Byte 4 00
hex
……
Byte 12 00
hex
Request
Byte 1 50
hex
Byte 2 80
hex
(Toggle bit, master 1, single master)
Byte 3 1D
hex
(slave address 29)
Byte 4 00
hex
……
Byte 12 00
hex
Response
Byte 1 50
hex
Byte 2 80
hex
(Toggle bit, master1)
Byte 3 analog channel 1 high byte
hex
Byte 4 analog channel 1 low byte
hex
Byte 5 analog channel 2 high byte
hex
Byte 6 analog channel 2 low byte
hex
Byte 7 analog channel 3 high byte
hex
Byte 8 analog channel 3 low byte
hex
Byte 9 analog channel 4 high byte
hex
Byte 10 analog channel 4 low byte
hex
Byte 11 00
hex
not usedt
Byte 12 00
hex
not usedt