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3-10 Chapter 3 Variables
9.5
Internal output variable
Specifies the controller's internal output signals and indicates the signal status.
Format 1
MOm(b,···,b)
Format 2
MO(mb,···,mb)
Values
m : port number .................... 0 to 7, 10 to 17, 20 to 27, 30 to 33
b : bit definition .................... 0 to 7
• If the bit definition is omitted in Format 1, bits 0 to 7 are all selected.
Functions
Internal output variables which are used only in the controller, can set the status and refer.
These variables are used for signal communications, etc., with the sequence program.
Ports 30 to 33 are for dedicated internal output variables which can only be referenced
(they cannot be changed).
1. Port 30 indicates the status of origin sensors for axes 1 to 8 (in order from bit 0). Port
31 indicates the status of origin sensors for axes 9 to 16 (in order from bit 0).
Each bit sets to "1" when the origin sensor turns ON, and to "0" when OFF.
2. Port 34 indicates the HOLD status of axes 1 to 8 (in order from bit 0). Port 35 indicates
the HOLD status of axes 9 to 16 (in order from bit 0).
Each bit sets to "1" when the axis is in HOLD status, and to "0" when not.
Bit
7
6
5
4
3
2
1
0
Port 30
Port 31
Axis 8
Axis 16
Axis 7
Axis 15
Axis 6
Axis 14
Axis 5
Axis 13
Axis 4
Axis 12
Axis 3
Axis 11
Axis 2
Axis 10
Axis 1
Axis 9
Origin sensor status 0: OFF / 1: ON (Axis 1 is not connected)
Port 34
Port 35
Axis 8
Axis 16
Axis 7
Axis 15
Axis 6
Axis 14
Axis 5
Axis 13
Axis 4
Axis 12
Axis 3
Axis 11
Axis 2
Axis 10
Axis 1
Axis 9
Hold status 0: RELEASE / 1: HOLD (Axis 1 is not connected)
• Axes where no origin sensor is connected are always ON.
• Being in HOLD status means that the axis movement is stopped and positioned within the target
point tolerance while the servo is still turned ON.
• When the servo turns OFF, the HOLD status is released.
• Axes not being used are set to "1" (HOLD).
• The status of each axis in order from the smallest axis number used by robot 1 is maintained.
Example) In the case of a configuration where robot 1 has 5 axes and robot 2 has 4 axes, bits
0 to 4 of port 30 indicate the status of axes 1 to 5 of robot 1, bits 5 to 7 of port 30 indicate the
status of axes 1 to 3 of robot 2, and bit 0 of port 31 indicates the status of axis 4 of robot 2.
MEMO
Summary of Contents for SCARA YRCX Series
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