88 Appendix
WAGO-I/O-SYSTEM 750
750-658 CAN Gateway
Manual
Version 1.2.1, valid from FW/HW-Version 01/01
12.1.3.1.2 Acknowledgement
The following acknowledgements are defined:
Table 36: Acknowledgement
Value Explanation
Description
0
INVALID
Signals that the receiver has not started operations again after
a reset.
1
HOLD ACKNOWLEDGE
Signal or confirmation that the channel is ready, but data is
not currently being transferred (e.g. because there is not any
data yet).
2
RESET ACKNOWLEDGE Response to "RESET REQUEST" when Mailbox in reset.
3 ... 7 -
(not supported, ignore)
12.1.3.1.3 Signaling
In signal mode, the handshake byte appears as follows:
Table 37: Structure of the Handshake Byte
Handshake byte
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0
0
Signal
Table 38: Signaling
Value
Explanation
Description
0x00
INVALID SIGNAL
State of the process image with no effect by Mailbox 2.0
0x32
RESET SIGNAL
Shows that the local Mailbox is in the process of restarting
0x33
ERROR SIGNAL
Shows that the local Mailbox is in the fault condition
(other)
-
Other values are not considered as signals and are
processed separately in the Status or Control nibble.