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FINS Server Section 5-5
words read) + CPU cycle time + CPU data read processing time (Refer to
page 96)
Note 1. The transfer time may exceed the calculated value due to the actual oper-
ating environment. Factors affecting the transfer time are network traffic,
the window size of each node, Ethernet Unit traffic (e.g., socket services,
FTP server communications, etc.), and the system configuration.
2. The CPU data set processing time is the standard when the peripheral ser-
vice time is set in the CPU Unit System Setup to the default of 4%. As this
value is increased, the processing time is shortened.
Example This example shows the calculations for a host computer sending a write
command for 256 words to the PC. The standard for the maximum transfer
delay time is as follows when the PC’s CPU cycle time is 10 ms.
Maximum transfer delay time
= Host computer communications processing time + 4 + (0.011 x 256) + 10
+ (256 x 0.02 + 20) = host computer communications processing time + 42 ms
5-5 FINS Server
The following table shows the FINS commands that can be addressed to the
Ethernet Units. The Ethernet Units automatically send responses for these
commands. For details, refer to Section 11 FINS Commands Addressed to
Ethernet Units.
MRC SRC Name
04 03 RESET
05 01 CONTROLLER DATA READ
06 01 CONTROLLER STATUS READ
08 01 INTERNODE ECHO TEST
02 BROADCAST TEST RESULTS READ
03 BROADCAST DATA SEND
21 02 ERROR LOG READ
03 ERROR LOG CLEAR
27 01 UDP OPEN REQUEST
02 UDP RECEIVE REQUEST
03 UDP SEND REQUEST
04 UDP CLOSE REQUEST
10 PASSIVE TCP OPEN REQUEST
11 ACTIVE TCP OPEN REQUEST
12 TCP RECEIVE REQUEST
13 TCP SEND REQUEST
14 TCP CLOSE REQUEST
20 PING
50 IP ADDRESS TABLE WRITE
57 IP ADDRESS WRITE (CJ Series only)
60 IP ADDRESS TABLE READ
61 IP ROUTER TABLE READ
62 PROTOCOL STATUS READ
63 MEMORY STATUS READ
64 SOCKET STATUS READ
65 ADDRESS INFORMATION READ
67 IP ADDRESS READ (CJ Series only)