CV500ETN01 Omron, CV500ETN01 Datasheet - Page 219

• 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

Command/Response Reference
Parameters
Memory Status
(Response)
Precautions
194
1,2,3...
A total of 23 data items in six areas are returned in the following order. Each
item consists of 4 bytes.
1. Short Buffer Application: Two items are returned (8 bytes).
2. Short Buffer Application by Type: Thirteen items are returned (52 bytes).
3. Long Buffer Application: Two items are returned (8 bytes).
4. Not Used: Always 0. (4 bytes)
5. Network Memory Application: Two items are returned.
6. Memory Exhaustion Log (12 bytes)
All the above values are set to 0 if Ethernet communications functions are
stopped due to improper settings in the system setup.
These values are cleared when the Ethernet Unit is started or reset. Values
will be counted only until the maximum values are reached.
a. The number of short buffers currently being used.
b. The number of short buffers in the system (fixed at 1,472 decimal).
a. The number of short buffers used for storing communications data
b. The number of short buffers used for protocol headers (TCP, UDP, IP,
c. The number of short buffers used in socket structures
d. The number of short buffers used as protocol control blocks
e. The number of short buffers used for routing tables
f.
g. Not used (always 0)
h. The number of short buffers used for IP fragment re-assembly queue
i.
j.
k. The number of short buffers used for storing socket options
l.
m. The number of short buffers used for storing interface addresses
a. The number of long buffers currently being used.
b. The number of long buffers in the system (fixed at 64 decimal).
a. The number of bytes used (in K bytes)
b. The percentage used
Counts for the following values indicate a high load on the Ethernet Unit.
These high loads may be caused by problems in communications, partic-
ularly FINS communications and UDP sockets. If these values are consis-
tently high, check your applications.
a. The number of times an attempt was made to secure a short buffer
b. The number of times an attempt was made to secure a short buffer
c. The number of times an attempt was made to release and secure a
ICMP, ARP)
Not used (always 0)
headers
The number of short buffers used for storing socket addresses
Not used (always 0)
The number of short buffers used for storing access rights
without WAIT when there were no short buffers available.
with WAIT when there were no short buffers available.
short buffer already being used by another socket when there were no
short buffers available.
Section 7-3