The Handshake Byte; Figure 39: Use Of The Handshake Byte; Table 28: Structure Of The Handshake Byte - WAGO -I/O-SYSTEM 750 Manual

74 Appendix
10.1.2.1

The Handshake Byte

In general, a distinction is made between Control(C) and Toggle(T) mode (bit 7).
The Control mode is used to synchronize the subscribers. The Toggle mode is
used to exchange data.
Structure of the handshake byte:

Table 28: Structure of the Handshake Byte

Bit 7 Bit 6
C/T
T
The following figure shows the basic use of the handshake byte.

Figure 39: Use of the Handshake Byte

Handshake byte
Bit 5 Bit 4 Bit 3
Status
Response C/T
0x0
Bit 2 Bit 1 Bit 0
Control
Command
T 0x0
Version 1.2.0, valid from FW/HW-Version 01/01
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