Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 179)

Read/write function block data
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Timing relays T01 .. T32
Telegram structure
Byte Meaning Value (hex), sent by
Master Slave
0 Toggle byte J page 94 J page 94
1 Command:
Read 92 –
Write B2 –
Response:
Read successful – C2
Write successful – C1
Command
rejected
– C0
2 Type 21 21
3 Instance 01 – 20 01 – 20
4 Index J Table 112 J Table 112
5 – 8 Data 1 – 4
Read operation 00 depending on
index,
J Table 113, 114
Write operation depending on
index,
J Table 113, 114