Jetter JX3-BN-CAN, Руководство пользователя

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5.2 Indirect Access to JX3 Module Registers
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Index for Indirect Register Access
Module Register 7
Description At indirect register access to JX3 modules, the index contains
the module register number. It functions as a pointer.
Access read and write access
Value Range 0 ... 9999
Value After Reset 9
Comment After switching on, the index points to the module register
"operating system version".
Data for Indirect Register Access
Module Registers 8
Description This module register is for reading, respectively writing, the
value of the selected module register.
The JX3-BN-CAN module copies the value of the actual
module register to this register.
Access Read and write access
Value Range 32 bits
Value After Reset Operating System Release
Example: Directly Checking Communication with the JX3 Modules
In a JX3-BN-CAN module, communication with the connected JX3 modules is to be
checked. For this, bit 15 in register 0
the status of the JX3-BN-CAN must be queried.
VAR
nm_State : INT at %vl
3310
;
// Status register JX3-BN-CAN
END_VAR ;
CONST
c_ComActive =
15
;
// Bit number
END_CONST ;
TASK 0
WHEN
BIT_SET (nm_State, c_ComActive) // Communication active
CONTINUE ;
// ...
END_TASK ;
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