Datasheet

Ip251_02b_oi_e.doc / Dez-15 Page 13 / 28
7. Parameters
7.1. Scaling of serial readout data
You can read out the actual SSI position of the encoder at any time from the serial link. For
setting of communication parameters (baud rate etc.) you need a PC.
IP251 uses the DRIVECOM communication standard according to ISO 1745. Details about this
protocol can be found in the file Serpro1a.doc,
(available for Download from www.motrona.com)
The serial access code for the actual encoder position is „ :8 ”
(ASCII characters for colon and 8)
Serial data be re-scaled by using the parameters xOperand, /Operand and +/-Operand :
Serial Readout = SSI encoder data x [
xOperand
/Operand
] + +/-Operand
There operands affect only serial readout of encoder data but not the parallel data output.
With the settings
xOperand = 1.0000,
/Operand = 1.0000
+/-Operand = 0.0000
the serial readout value equals to the SSI encoder value.
7.2. Scaling of parallel output data
7.2.1. If you like to convert the SSI encoder data to the parallel output straight 1:1
 Linearisation Mode = 0
 Round Loop = 0
 Parallel Mode = 0 (binary output)
= 1 (Gray coded output)
= 2 (BCD output)
 Parallel Inv. = 0 (Log 1 = „HIGH“, normal output polarity)
= 1 (Log 1 = „LOW“, inverted output polarity)
The settings of the Linearization registers are not important in this case.