GE GFK-1004B Network Router User Manual


 
4
4-18 TCP/IP Ethernet Communications User’s Manual – January 1996
GFK-1004B
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.
Example Command Block
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 units 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 CPU - memory type from which to send data (%R)
Word 14 00050 (0032) Local PLC CPU - starting address from which to send data (%R50)
Word 15 00008 (0008) Local PLC CPU - number of memory units (8 registers)
Word 16 00000 (0000) Reserved
Word 17 00000 (0000) Reserved
Word 18 00001 (0001) SRTP Server Host Address Type (IP Address)
Word 19 00004 (0004) SRTP Server Host Address Word Length (4)
Word 20 00003 (0003) SRTP Server Host Address Data Word 1 (3)
Word 21 00000 (0000) SRTP Server Host Address Data Word 2 (0)
Word 22 00000 (0000) SRTP Server Host Address Data Word 3 (0)
Word 23 00001 (0001) SRTP Server Host Address Data Word 4 (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.
(Word 8) Channel Number: Word 8 specifies the channel to be used for the send. This
value must be in the range of 1 to 16. If the channel is out of range, a command error
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.