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Installation manual
CNC 8060
CNC 8065
2.
MACHINE PARAMETERS.
(REF: 1402)
Machine parameters for the axes. Work sets.
Default value: 0.
Associated variable: (V.)[ch].MPA.SSIALARMLEVEL[set].xn
Value that the alarm/acknowledge bits for an error condition to occur. This parameter only
makes sense when SSIALARMBITS is other than 0.
SSIDATAMODE
Transmission mode.
Possible values: From 0 to 1.
Default value: 0.
Associated variable: (V.)[ch].MPA.SSIDATAMODE[set].xn
Order in which the most significant bit is transmitted.
STARTDELAY
Number of clocks to wait between the first down flank and the
first up flank.
Possible values: From 0 to 255.
Default value: 0.
Associated variable: (V.)[ch].MPA.STARTDELAY[set].xn
This parameter sets the number of SSI clocks to wait for since the first SSI down flank until
the first up flank is generated. This value is needed to implement the wait time to convert
the signal in some encoders.
SSIRESOL
Digital counting (feedback) resolution.
Possible values: From 1 to 999999999.
Default value: 10000.
Associated variable: (V.)[ch].MPA.SSIRESOL[set].xn
Number of digital counting units contained in a pitch.
Example:
If an encoder indicates an error condition with 2 bits where the first one is a 1 and the second a 0
SSIALARMBITS = 2
SSIALARMLEVEL = 2.
Example:
If an encoder has a transmission-OK acknowledgment bit and it indicates it with a logic 0.
SSIALARMBITS = 1
SSIALARMLEVEL = 1. Because a 0 means that everything is OK.
Value. Meaning.
0 The LSB (Least Significant Bit) is the first one.
1 The MSB (Most Significant Bit) is the first one.
Example:
CLOCKFREQ = 400 kHz
STARTDELAY = 3
Waiting time = (1/400*1000)*3 = 7,5 clocks.
Example:
Fagor absolute linear encoder with a pitch of 20 microns and a digital resolution of 1 dµ.
SSIRESOL = 20 µ / 0.1 µ = 200.
Example:
For SSITYPE = INDUCTOSYN absolute rotary, for a 2 or 4-degree turn and depending on whether
it is a high resolution or low resolution encoder, the counting increment is 10000 units.
PITCH = 2º or 4º
SSIRESOL = 10000
The resolution of the axis will be; 2º or 4º / 10000 = 0.0002 or 0.0004 degrees.
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