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TCP/IP Ethernet Communications User’s Manual - August 1997 GFK-1084B
Send Information Report (2010)
The Send Information Report COMMREQ requests that a particular block of memory
within the PLC CPU reference tables be transferred periodically from an Ethernet
Interface (SRTP Client) to a Host Application SRTP Server. The Command Block
specifies the repetition period, the number of transfers to the server to perform, and the
timeout allowed in waiting for each transfer to complete. The first send is performed
immediately, regardless of the period specified.
Example1 Command Block–Basic Example
Establish a channel (channel 7) to a remote Host application server at IP address 3.0.0.1.
Return the COMM_REQ Status word to %R10. Send local PLC registers %R50–%R57 to
remote host. Repeat the send 10 times once every 7 seconds with a timeout of 500 ms
for each read.
Dec (Hex)
Word 1 00017 (0011) Length of Send Information Report Data Block (17 words)
Word 2 00000 (0000) Always 0 (no–wait mode request)
Word 3 00008 (0008) Memory type of CRS word (%R)
Word 4 00009 (0009) CRS word address minus 1 (%R10)*
Word 5 00000 (0000) Reserved
Word 6 00000 (0000) Reserved
Word 7 02010 (07DA) Send Information Report Channel Command number
Word 8 00007 (0007) Channel number (7)
Word 9 00010 (000A) Number of repetitions (send 10 times)
Word 10 00003 (0003) Time unit for send period (3=seconds)
Word 11 00007 (0007) Minimum interval between host accesses (every 7 seconds)
Word 12 00050 (0032) Timeout on each individual transfer response (500 ms)
Word 13 00008 (0008) Local PLC - Memory type from which to send data (%R)
Word 14 00050 (0032) Local PLC - Starting address from which to send data (%R50)
Word 15 00008 (0008) Local PLC - Number of memory units (8 registers)
Word 16 00000 (0000) Reserved
Word 17 00000 (0000) Reserved
Word 18 00001 (0001) Remote Network address type (IP Address)
Word 19 00004 (0004) Remote Network address length in words (4)
Word 20 00003 (0003) Remote Host - Register 1 of IP address (3)
Word 21 00000 (0000) Remote Host - Register 2 of IP address (0)
Word 22 00000 (0000) Remote Host - Register 3 of IP address (0)
Word 23 00001 (0001) Remote Host - Register 4 of IP address (1)
* Word 4 (CRS word address) is the only zero–based address in the Command Block.
Only this address requires subtracting 1 from the intended address.
(Word 7) Channel Command Number: Word 7 requests that a Send Information Report
channel be set up. If the command is processed successfully, it will result in attempting
the specified number of transfers from the client to the server.
The term local PLC is
used here to identify the
client PLC-the PLC
that initiates the
communications
request.
The term SRTP
Server is used here to
identify the Host
server.