Advantech PCL-848A/B Instrukcja Użytkownika Pobierz pdf (Strona 42)

36 PCL-848AB User's Manual

3.4.18. STATUS Purpose :

Purpose :

This command reads the status from the interface and returns this value to the

calling statement.

Offset :

STATUS%=42

Syntax :

CALL STATUS%(CONDITION%,5%) ----BASIC

CALL ABSOLUTE(CONDITION%,5%,5TATUS%) ----BASIC Compiler

Parameter :

CONDITION% - This number specifies which status is read.

0 - 7 : NEC7210 read register 0 - 7.

8 : Error Number of last called command.

9 : Count of string bytes that are output or entered.

10 : Timeout interval in milliseconds.

11 : I/O port address of NEC7210.

12 : DMA & IRQ setting.

S% - Variable which represents interface status 3 response.

Bus Activity :

None.

Remark :

The error number returned with condition 8 represents different types of errors.

Error Number Error Type

0 No error

l Handshake timeout

2 Interface error

3 Call ABORT when non-system controller

4 Invalid passed parameter(s)

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 83 84

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Advantech PCL-848A/B Instrukcja Użytkownika Strona 42