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2-1
Section
Communications Functions
12
2-1
Communications Functions
The following table shows the communications service functions that are avail-
able with the Ethernet Unit.
Function
FINS
communications
Socket services
FTP server
Client
to
server
PC to PC
By executing
SEND(090), RECV(098)
or CMND(490)
FINS command
By executing
CMND(490) or
manipulating dedicated
control switches in
memory.
Any data
---
---
PC to host
computer
By executing
SEND(090),
RECV(098), or
CMND(490)
Host computer (with
FINS Gateway function)
FINS command
At PC: By executing
CMND(490) or
manipulating dedicated
control switches in
memory.
Host computer (without
FINS Gateway function)
(Passive open)
Any data
(Active open)
---
E-mail can be set to be
sent when specified bits
turn ON, when errors
occur, or at fixed
intervals.
Mail server
Host
computer
to PC
By sending FINS
messages from the
host computer.
Host computer
(with FINS Gate-
way function)
FINS command
At PC: By executing
CMND(490) or
manipulating dedicated
control switches in
memory.
Host computer (with-
out FINS Gateway
function)
(Active open)
Any data
(Passive open)
FTP commands
executed by
host computer
Host computer
File
---
Data type
FINS commands
(various commands for
I/O memory
communications in the
PC, changing the
operating mode,
reading and writing
files, and so on)
Any data (PC’s internal
I/O memory)
DOS files in File
Memory (Memory Card
or EM File Memory)
User-defined
messages, error log
information, status
information
Maximum data size
PC to PC: 1,980 bytes
max.
PC to host computer:
1,980 bytes max.
Host computer to PC:
2,000 bytes max.
1,984 bytes max.
No particular limit.
User-defined
messages: 1,024 bytes
max.
Features
Enables control of PC
and host computer that
support FINS
commands.
Communications by
standard TCP/IP and
UDP/IP via Ethernet.
No need to set FINS
addresses.
Files are read by
means of simple
commands and
applications from host
computers with FTP
client functions.
Ethernet Unit status is
obtained by e-mail.
Notification of errors is
received by e-mail.
Reference
Section 5 FINS
Communications
Section 6 Socket
Services
Section 7 FTP Server
Section 8 Mail