Eaton Electrical PROFIBUS-DP EZ204-DP - Manual (Page 77)

Read/write function block data
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Analog value comparator/threshold comparator:
A1 – A16
Telegram structure
Byte Meaning Value (hex), sent by
Master Slave
0 Toggle byte J page 44
1 Command:
Read 89 –
Write 8D –
Response:
Read successful – C2
Write successful – C1
Command
rejected
– C0 1
2 Type 8D 8D
3 Instance 2 00 – 0F 00 – 0F
4 Index Table 24
5 – 8 Data 1 – 4 depending on index J Table 25
1) Possible causes J page 91
2) EZ provides 16 analog comparators A1 to A16 for use as
required. These can be addressed using the instance (0 – F).