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IMP-400UHD Command Guide
2.2.4 The number of TCP-IP connections
The IMP-400UHD series can connect up to seven connections (seven ports) simultaneously. If the
IMP-400UHD is controlled from eight or more PCs, they may not be connected to the IMP-400UHD, since the
number of connections that can be used is limited.
If you use eight connections or more, execute TCP-IP connection/close every time the communication
command is sent or received from the software of user's side. It makes IMP-400UHD's ports occupied or
released so that eight or more connections can be connected logically.
Your PC's software
TCP-IP connection
Send command (@xxx)
TCP-IP close
Note:
If any command is not sent from the PC side to the IMP-400UHD for 30 seconds, the IMP-400UHD
disconnects the connection to avoid the limitation problem on the number of connections. As a result,
connection needs to be established again from the PC side after the current connection of the PC is
disconnected.
(Since the number of ports in the IMP-400UHD is seven, ports are occupied permanently if the PC is turned
off while connections are valid. To prevent this, the IMP-400UHD disconnects connections if no
communication command is sent from the PC side.)
10
[Table 2.3] Increasing connections
IMP-400UHD
→
(Occupied by 1 port)
→
←
Send back command (@xxx)
→
(Release 1 port)
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