Mitsubishi Electric M800VW Series Programming Manual page 846

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function
14.34 PLC Axis Indexing
(*1) The operation of station position (STO1 to STO256) represents the one when "#12801 aux_Cont1/bit5" is OFF.
When "#12801 aux_Cont1/bit5" is ON, the nearest station No. will be output. (Station No. constantly output)
The previous station No. will be output if the axis is on somewhere between two stations.
(*2) The operation of Automatic set position reached (JSTA) represents the one when "#12802 aux_Cont1/bit3" is OFF.
If "#12802 aux_Cont1/bit3" is ON, turning OFF Operation start (ST) will turn OFF the Automatic set position reached
(JSTA) as well. (JSTA will be interlocked with the start signal.)
Note
(1) When the torque limit value of the operation parameter group selected at turning-ON of operation start is set to "0", the
operation error (M01 0167) occurs and the axis movement by the cycle operation cannot be performed.
POINT
(1) Setting time is required from when the travel commands become zero (SMZ=1) until the positioning is complet-
ed. The setting time will be lengthen if a set position output width is narrower than required. Therefore, set re-
quired positioning accuracy in the set position output width.
(2) If the start signal is turned OFF during positioning, the axis will be positioned at the nearest coming station. In
this case, the Automatic set position reached (JSTA) signal will not be output.
CAUTION
The rotation direction will be determined by the combination of the following: operation mode, input control signal
"Rotation direction (DIR)", parameter "#12802 aux_Cont1.bit9 Rotation direction in the shortcut direction" and
"#1018 ccw". At operation start, pay careful attention to the motor rotation direction. When operating the servomotor
for the first time, the motor should be operated as a single unit to confirm the operation, etc.
825 IB-1501668-B