CV500ETN01 Omron, CV500ETN01 Datasheet - Page 168

• Manufacturer Part Number: CV500ETN01
• Description: Programmable Logic Controller
• Manufacturer: Omron

Specifications of CV500ETN01

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

Communications Port
Completion Codes
Timing of Communications Flag Changes
Communicating between OMRON PLCs
The status of a SEND(090), RECV(098), and CMND(490) instruction after
execution is reflected as a communications port completion code, in one word
(two bytes) of data as shown in the following table. (The value is 0000 during
instruction execution.) The recorded status is saved until execution of the next
instruction.
The meanings of the communications port completion codes are the same as
those for FINS commands and responses. When CMND(490) is used, how-
ever, even if a FINS command has an abnormal completion, it will not be
reflected in the communications port completion code. For details, refer to
Communications Port Error Flag and Completion Codes for CMND(490)
below.
Bits 08 to 15 in the communications port completion code correspond to the
first byte of the response code, and bits 00 to 07 correspond to the second
byte. For details, refer to 8-5 Troubleshooting with Response Codes.
Communications Port Error Flag and Completion Codes CMND(490)
Errors that occur when CMND(490) is used generate a Communications Port
Error Flag and are recorded in a communications port completion code only in
the following cases:
Errors other than these are recorded in the response codes of the responses
stored from the beginning response storage word onwards. Be careful of
these, because there are no Communications Port Error Flags and they are
not recorded in a communications port completion code.
A203
A204
A205
A206
A207
A208
A209
A210
Word
• When a response timeout error has occurred.
• When the number of communications data bytes exceeds the maximum
• When the actual number of response bytes is greater than the number of
• The Communications Port Enabled Flag remains OFF during communica-
• The Communications Port Error Flag retains its status until the next trans-
• The Communications Port Error Flag turns OFF with the execution of the
value for the Unit (i.e., 2,000 bytes for the Ethernet Unit).
reception bytes that has been set. (The response is not stored in this
case.)
tions and turns ON when they are completed (regardless of whether or
not an error occurs).
mission or reception.
next communications instruction even if there was an abnormal comple-
tion.
Communications Port 0 Completion Code
Communications Port 1 Completion Code
Communications Port 2 Completion Code
Communications Port 3 Completion Code
Communications Port 4 Completion Code
Communications Port 5 Completion Code
Communications Port 6 Completion Code
Communications Port 7 Completion Code
Contents
Section 6-6
143