DFS-01UHD/DFS-01HD Command Guide
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2.1.4 The number of TCP-IP connections
The DFS supports up to eight simultaneous TCP-IP connections (eight logical ports).
To maintain optimal system accessibility, it is advisable to issue “port-open” and “port-close” commands
before and after command or query strings are issued. This approach enables eight or more control devices
to be effectively interfaced simultaneously and without concern for communication errors.
[Table 2.2] Increasing connections
Your PC software
DFS
Connecting TCP-IP
→
(Occupying 1 port)
Sending command (@xxx)
→
←
Replying command (@xxx)
Closing TCP-IP
→
(Releasing 1port)
Note:
As a safeguard, the DFS incorporates a 30-second timeout window for each port. If any port is inactive for
more than 30 seconds, it will be closed automatically.