HP SB Series Instrukcja Użytkownika Pobierz pdf (Strona 40)

Programming Guide – 35

Table 14: SX Switch Command Set

Syntax Function

An switch to channel n

Sn set driver n

Cn clear driver n

Bk configure drivers with binary code k

E enable unit to assert SRQ interrupt after completing each command

D disable SRQ interrupt except when an error occurs

R remote mode: lock out front panel keys;

not implemented in SB switch (RS232 only)

L local mode: enable front panel keys;

not implemented in SB switch (RS232 only)

Response messages (Table 15) are formatted as qn Rm, where q is the unit status (A =

normal, C = command error, S = system error); n is the channel number (0 to N); R is the letter

R; and m is the state of the external relay drivers (0 to 255).

Table 15: Response Messages for SX Switch Commands

Status Byte Register

Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Message

0RQS0 00000 BUSY

0RQS0 00001 NORMAL

0 RQS 1 0 0 0 0 1 BAD DATA

0 RQS 1 0 0 0 1 0 UNIT FAILURE

These bits are usually set to 0. Bit 6 (RQS) is set to 1 when the SB switch generates a service

request interrupt.

1 2 ... 35 36 37 38 39 40

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HP SB Series Instrukcja Użytkownika Strona 40