C500LK009V1 Omron, C500LK009V1 Datasheet - Page 94

• Manufacturer Part Number: C500LK009V1
• Description: PC LINK UNIT
• Manufacturer: Omron

Specifications of C500LK009V1

• Leaded Process Compatible: No
• Peak Reflow Compatible (260 C): No
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Data Processing for
SEND(90)/RECV(98)
Programming Example:
Multiple
SEND(90)/RECV(98)
NETWORK READ/WRITE Instructions
6-2-6 Network Instruction Status Flags
Timing
80
Enable Flag
Level 0: SR 25201
Level 1: SR 25204
Error Flag
Level 0: SR 25200
Level 1: SR 25203
C200HX/C200HG/C200HE/
C200HS/C200H
Enable Flag
Error Flag
Response code
Previous
response code
Enable Flag
All levels SR 25204
Error Flag
All levels: SR 25203
C1000H/C2000H
Instruction #1
received
SEND(90) and RECV(98) are based on command/response processing. That
is, the transmission is not complete until the sending node receives and
acknowledges a response from the destination node. Operation without a
response is also possible for SEND(90), if desired. The SEND(90)/RECV(98)
Enable Flag is not turned ON until the first END(01) after the transmission is
completed.
If multiple SEND(90)/RECV(98) operations are used, the following flags must
be used to ensure that any previous operation is completed before attempt-
ing another. Because the C200H/C200HS provides separate flags for each
operating level, it is possible to control these independently and have opera-
tions going on in both levels simultaneously. With the C1000H/C2000H, only
one SEND(90)/RECV(98) operation should be performed in the network at a
time, regardless of the number of operating levels.
The following diagram shows the status of the Enable Flag, Error Flag, and
response code while two network instructions are issued in the C1000H PC. An
error occurs during execution of first instruction.
Data is transmitted for SEND(90) and RECV(98) for the C1000H/C2000H when
SEND(90)/RECV(98) is executed and for the C200H/C200Hj when END(01) is
executed. Final processing for transmissions/receptions is performed when
END(01) is executed for all PCs.
To ensure successful SEND(90)/RECV(98) operations, the program must use
the SEND(90)/RECV(98) Enable Flag and SEND(90)/RECV(98) Error Flags to
confirm that execution is possible. The following program shows one way to do
this:
00
Instruction #1 com-
pleted
OFF during SEND(90)/RECV(98) execution (including command
response processing). Do not start a SEND(90)/RECV(98)
operation unless this flag is ON.
OFF following normal completion of SEND/RECV (i.e., after
reception of response signal)
ON after an unsuccessful SEND(90)/RECV(98) attempt. Error
status is maintained until the next SEND(90)/RECV(98) operation.
Error types:
Time-out error (command/response time greater than 1 second)
Transmission data errors
Instruction
response code
Instruction #2
received
#1
00
Functions
Instruction #2
completed
Instruction
response code
Section 6-2
#2
1
0
1
0