Parker Products COMPAX-M /-S (L) manual Binary data transfer using RS232

Operating Instructions		COMPAX-M / -S
RS232 interface
	8.6.3.4 Binary data transfer using RS232

P20: switching on binary data transfer

Example:

COMPAX response

A series of commands can be transferred in the COMPAX internal binary format for time-critical applications. This saves times as ASCII into COMPAX internal binary format conversion is not required. You can still transfer data in the normal ASCII format (mixed mode).

P20 = P20 + 16

Adds 16 to the required P20 setting (see interface parameters section in the User Guide). This ensures that binary data transfer is available in addition to normal transfer (ASCII).

P20="3": with XON, XOFF; no error response message; no binary data transfer.

P20="19": with XON, XOFF; no error response message; binary data transfer.

!The end sign must not be transmitted!

!The entire length of the binary format must always be transferred!

!Function signs ("$" "," "?" "!") are not available when using binary transfer.

as ASCII transfer:

♦without error: using "CR LF >".

♦with error: depending on the value of P20

(refer to "Error transmission" in the User Guide).

Meanings of the binary command codes

Numerical formats

Numerical formats of "yy yy"

Command	Binary format (hexadecimal)
POSA value	88 41 xx xx xx xx xx xx
	LSB	MSB
POSR value	88 52 xx xx xx xx xx xx
	LSB	MSB
SPEED value	88 53 xx xx xx xx xx xx
	LSB	MSB
ACCEL value	84 4C yy yy
	MSB	LSB
ACCEL- value	84 44 yy yy
	MSB	LSB
OUTPUT Oyy=0	85 4F yy yy 30
	MSB	LSB
OUTPUT Oyy=1	85 4F yy yy 31
	MSB	LSB
POSR value OUTPUT Oyy=0	8C 52 xx xx xx xx xx xx 4F		yy yy 30
	LSB	MSB	MSB LSB
POSR value OUTPUT Oyy=1	8C 52 xx xx xx xx xx xx 4F		yy yy 31
	LSB	MSB	MSB LSB
POSR value1 SPEED value2	8F 52 xx xx xx xx xx xx 53		xx xx xx xx xx xx
	LSB	MSB	LSB	MSB

Numerical formats of "xx xx xx xx xx xx" *2

3 bytes after the decimal point, 3 bytes before the decimal point.

Valency:

2-24 2-23 ...2-2 2-1 , 20 21 22 ... 222 223

Transmission sequence, e. g.: "88 41 LSB....MSB"

2 bytes before the decimal point. no digits after the decimal point.

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