Siemens LMV5 Series Technical Instructions page 274

Technical Instructions
Document No. LV5-1000
Number of messages
The number of addresses per message is limited:
20 addresses of the size of one word when reading
•
6 addresses of the size of one word when writing
•
For lockout history, messages must be exactly 16 addresses
•
For error history, messages must be exactly 8 or 16 addresses
•
Reply time of AZL... to a message from the master
1. Reading data from the LMV5... system:
1...3 addresses
4...9 addresses
10...15 addresses
16...20 addresses
These periods of time are defined from the complete writing of the message from
the master to sending the first byte by the AZL...
2. Writing data to the LMV5... system:
1 address
2...3 addresses
4...5 addresses
6 addresses
Modbus functions
The following Modbus functions are supported:
Function number
03 / 04
06
16
For more information about the Modbus protocol, refer to www.modbus.org.
Section 8
25...75 ms
75...125 ms
125...175 ms
175...225 ms
25...75 ms
75...125 ms
125...175 ms
175...225 ms
Function
Reading n words
Writing 1 word
Writing n words
Page 4
HOME
LMV Series
SCC Inc.