User manual

Functional Overview S3964R ♦ ProLinx Gateway
Driver Manual Siemens 3964R Protocol
ProSoft Technology, Inc. Page 47 of 64
April 14, 2009
Word Value Description:
3 0
Error Code. This error code should be monitored continuously because
sometimes it might take awhile for a communication error to occur
depending on timeout values and the type of error.
4 16
Number of data words in this message block. Modbus TCP/IP multi-
block Block Number (1 word) plus RK512 Header (10 words) plus the 5
words of fetched data.
5 0 Multi-block number should always be 0.
6 0x1141
Job Code ID. 0x1141 = DB-SEND initiated by 3964R communication
partner.
7 0 Data Block number. This is the block number to write the data to.
8 0
Data Word number. This is the index into the selected block number to
write the data to.
9 5
Number of data words Total. This is the number of data words that are
being sent in this message.
10 5
Number of data words Block. Always equal to Number of data words
Total.
11 0 Reserved.
12 0 Reserved.
13 0 Reserved.
14 0 Reserved.
15 0 Reserved.
16 11 1
st
data word value.
17 22 2
nd
data word value.
18 33 3
rd
data word value.
19 44 4
th
data word value.
20 55 5
th
data word value.
Port 0 Transmit Database (After Reading DB-Send Data)
After the DB-SEND data has been read, the transmit database must be updated
as follows:
Word Value Description:
300 X No change.
301 4
Last Received Sequence number. After DB-SEND data has been read,
copy value from Port 0 receive database Receive Sequence number
(word[0000]) to this location to tell 3964R driver that it is OK to write
new data into the Receive database. In our example, we copy the new
Receive Sequence value of 4 to this location.