ICP DAS USA PDS-700 Series, Руководство пользователя

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8. Can I use the SetCommState ( ) API to changes the Baud Rate/data
format settings of a virtual COM port?
Yes. In a Win32 environment, the CreateFile( ) API should be called to open the COM
Port(s) and then the SetCommState( ) API can be used to configure the settings.
Third-party tools may provide an OpenCom( ) function for accessing a COM port. In
actuality, the CreateFile( ) and SetCommState( ) APIs must be used to implement these
kinds of functions.
9. How many PCs can be connected to a single PDS device?
This depends on how many serial ports are available on the PDS series module and
how many serial ports which can be connected to each PC of PDS.
The PDS series module has 32 sockets in total includes some reserved listening
sockets. The PDS series module provides a single command port for configuring the data
(serial) ports. Thus, no matter how many data (serial) ports on the PDS are used, one more
socket connection is needed for the command port in order to configure them.
IO Port Data Ports
Listening
Sockets
Available
Sockets
Max. PCs
when using all
data ports
Max. PCs
when using 1
data port
DS-712 0 1 5 32 - 5 = 27 30/2 =15 30/2 = 15
DS-715 0 1 5 32 - 5 = 27 30/2 = 15 30/2 = 15
PDS-720
PDS-720D
0 2 6 32 - 6 = 26 29/3 = 9 29/2 = 14
PDS-721
PDS-721D
1 2 7 32 - 7 = 25 29/3 = 9 29/2 = 14
PDS-732
PDS-732D
1 3 8 32 - 8 = 24 28/4 = 7 28/2 = 14
PDS-734
PDS-734D
1 3 8 32 - 8 = 24 28/4 = 7 28/2 = 14
PDS-742
PDS-742D
0 4 8 32 - 8 = 24 27/5 = 5 27/2 = 13
PDS-743
PDS-743D
1 4 9 32 - 9 = 23 27/5 = 5 27/2 = 13
PDS-752
PDS-752D
0 5 9 32 - 9 = 23 26/6 = 4 26/2 = 13
PDS-755
PDS-755D
0 5 9 32 - 9 = 23 26/6 = 4 26/2 = 13