Digital Watchdog x39 Manuel de service télécharger pdf (Page 108)

Linkage with PLC

106 VIPA GmbH CP486 ⋅ 00/14

6.2.2 CP486: MS-DOS Driver Program

For communication via banks between PC and CP a specific communication driver must be loaded

in the CP486. This driver is specific for the communication with the VIPA handling modules. The

driver supplies functions which are easy to handle. The user needs no detailed information

concerning structure and operation of the banks. The driver contains software to control all banks.

At the moment it currently supports: banks 0 and 1 (PC active, CP passive). banks 2 und 3 (PC

passive, CP active) and bank 7 (process image). The driver automatically supports all functions for

all banks, no further configuration is necessary for particular banks.

Driver Installation:

It is recommended to load the driver at the best during the start of the CP486, that means already in

AUTOEXEC.BAT. As well a later call is possible. Notice, that as a rule , the handling modules for

synchronization are called during the restart. They just wait for a fixed time for a reaction of the CP.

Therefore PC and CP remain unsynchronized if the driver is not started within this time and no

communication is possible.

Call: CP386com.exe [/ini] [/txx] [/ixx] [/notsr] [/?] [/h]

The driver is a resident program (TSR-Utility) and allocates about 26 KByte of main memory

(program and data). The driver can be loaded only once at a time. Any further call causes a message,

that the driver has already been installed. A removal of the driver from main memory (de-

installation) is not pssible, thereto the CP has to be rebooted.

Driver options (Revision 2.6 and following):

/INI or /ini

With this option-switch the communication bank is initialized, pending jobs are stopped and the

whole bank is cleared. The driver is not installed. This initialization can be as often as necessary.

/Txx or /txx

This option specifies the timeout in seconds for the driver. The default timeout value is 10seconds.

Possible values for the timeout time are 1sec .. xx 30sec

/Ixx or /ixx

This option specifies the number of the software-interrupt for the communication via bank 2 and 3

(CP active mode). The default value is 78h. Possible values are 78h, 7Ah .. 7Fh.

/NOTSR or /notsr

Using this option when calling the driver in the command line causes the program to be installed

nonresident. The program will not be finished, no further DOS-commands can be entered or

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Digital Watchdog x39 Manuel de service Page 108