178
6 F 3 B 0 3 6 2
(3) When using the PC link protocol and socket transmission (TCP or UDP) with the Ethernet
Port.
Table A.8 Number of Words that can be Transmitted Using PC Link Protocol and
TCP/UDP Socket Transmission with the Ethernet Port with Ethernet
Port.
[When PC link transmission and TCP/UDP socket transmission is used either]
Module classification
Processing time for function
instructions
Maximum specifiable number of transmission words
for local T2N SEND instructions, remote T2N RECV
instructions or socket transmission
PU235N 1 ms (maximum) 1073 words (maximum)
2 ms (maximum) 858 words (maximum)
3 ms (maximum) 643 words (maximum)
4 ms (maximum) 428 words (maximum)
5 ms (maximum) 213 words (maximum)
PU245N 1 ms (maximum) 1038 words (maximum)
2 ms (maximum) 823 words (maximum)
3 ms (maximum) 607 words (maximum)
4 ms (maximum) 392 words (maximum)
5 ms (maximum) 177 words (maximum)
Conditions for the above table:
a. For the T2N configuration, this table assumes the configuration of figure A.5, in which T2N
(PU235N/245N) is mounted in the main base unit.
b. Refer to the T2N User's Manual - Hardware for the processing times for the instructions.
c. This table assumes that for PU245N, 128 words is specified for S20LP PC link protocol
transmission (SEND instruction on local port or RECV instruction from remote ports).
However, if S20LP PC link protocol transmission is not used, use the PU235N row in the
above table, even if there are PU245N unit installed.
d. The number of words is the maximum number words that can be specified during PC link
transmission and socket transmission. The maximum number of words that can be specified
during PC link transmission on Ethernet Port is 485 words, and during socket transmission on
Ethernet Port is 1000 words.
e. If less than 128 words are used with the S20LP PC link protocol transmission, the number of
words that can be specified during PC link transmission on the Ethernet Port can be increased
over the values listed in table A.8. If the number of words for S20LP PC link protocol
transmission on the PU245N decreased on one word, the number of words for PC link
protocol transmission or Socket transmission on the Ethernet Port can increase in one word.
However, the maximum number of words that can be specified during PC link transmission on
the Ethernet Port is 485 words, and during socket transmission on the Ethernet Port is 1000
words.
f. If the PU245N is used only Ethernet or S20LP PC link transmission, refer to the value listed
in table A.6 and if the PU245N is used only socket transmission on the Ethernet Port, refer to
the value listed table A.7.
T2N
(PU235N/
245N)
With the computer link and
loader not connected
(main base unit)
Figure A.5 T2N Configuration when Using the PC Link Protocol