Fl-Net Transaction Codes; Figure 8-5 Fl-Net Header - Hitachi FL.NET User Manual

(2) FL-net header format
The FL-net header consists of 64 or 96 bytes.
Lower layer header
The FL-net header is attached to the beginning of every frame related to the FL-net protocol.

8.1.9 FL-net transaction codes

The FL-net offers the following message transmission services:
• Word block data read
• Word block data write
• Network parameter read
• Network parameter write
• Stop directive (support for request only)
• Run directive (support for request only)
• Profile read (support for response only)
• Log data read
• Log data clear
• Message return
• Transparent type
64 to 96 bytes
FL-net header
FA link data
1,500 bytes maximum

Figure 8-5 FL-net Header

8-7
1,024 bytes maximum
Cyclic/message data
8 APPENDIXES