Denso Power Net Terminal BHT-7500 Spezifikationen Seite 300

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Shown below is a coding sample for enabling the RS/CS control.
OPEN "COM:,,,,1" AS #16
Instead of the OPEN "COM:" statement, you can use an OUT statement for
controlling the RS signal (supported by the optical interface of the BHT-5000 and
by the BHT-4000) or the ER signal (which is supported by the BHT-4000). Also,
you can use a
WAIT statement or INP function for monitoring the CS signal or
CD signal (supported by the BHT-4000). (To connect the BHT to an asynchro-
nous half-duplex modem, it is necessary to use the
OUT and WAIT statements
and
INP function.)
timeout
timeout
is a maximum waiting time length until the CS signal goes ON after
the BHT becomes ready to send data. It should be 0 to 255 in increment of 100
ms.
Specification of zero (0) causes no timeout.
Timeout is supported by the optical interface of the BHT-5000 and by the BHT-
4000. Shown below is a coding sample for setting 10 seconds to
timeout.
OPEN "COM:,,,,1,100" AS #6
To make the direct-connect interface of the BHT-3000/BHT-5000/BHT-6000/
BHT-6500/BHT-7000/BHT-7500 support timeout, the
RS/CS option should be
set to "2" or "3" so that the RD signal is regarded as CS. If any of "0," "1," and
"4" has been set to the RS/CS option, the value of the timeout option will be
modified.
The optical interface of the BHT-3000/BHT-6000/BHT-6500/BHT-7000/BHT-
7500 does not support timeout. If specified, the
timeout option will be
ignored resulting in no run-time error.
RS (For the BHT-4000/BHT-5000)
RS specifies whether the RS signal should go ON or OFF when the OPEN
"COM:"
statement opens a communications device file of the optical interface
in the BHT-4000/BHT-5000. You should set 0 (OFF) or 1 (ON: default). This
specification is effective only when the RS/CS control is disabled.
ER (For the BHT-4000)
ER specifies whether the ER signal should go ON or OFF when the OPEN
"COM:"
statement opens a communications device file in the BHT-4000. You
should set 0 (OFF) or 1 (ON: default). This specification is effective only when
the direct-connect interface is selected. If specified for the optical interface, the
ER option will be ignored resulting in no run-time error. In the BHT-3000/BHT-
5000/BHT-6000/BHT-6500/BHT-7000/BHT-7500, specifying this
ER option
results in a run-time error.
HS (High-speed transmission for the BHT-4000)
This specification is effective only in the BHT-4000. In other BHTs, specifying
HS results in a run-time error.
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