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3 - 7 
Chapter 3    Specifications and Functions
 
3.2.2 QD77MS main functions 
The outline of the main functions for positioning control with the Simple Motion module 
is described below. (Refer to "Section 2" for details on each function.) 
 
Main functions 
Details 
Reference 
section
O
P
R
 control 
Machine OPR control 
Mechanically establishes the positioning start point using 
a near-point dog, etc. In the data setting method, no axis 
movement occurs since the current position is set as the 
home position. (Positioning start No. 9001) 
8.2 
Fast OPR control 
Positions a target to the OP address ([Md.21] Machine 
feed value) stored in the Simple Motion module using 
machine OPR. (Positioning start No. 9002) 
8.3 
Major posit
ioning c
ontrol
 
Position 
control 
Linear control 
(1-axis linear control) 
(2-axis linear interpolation control) 
(3-axis linear interpolation control) 
(4-axis linear interpolation control) 
Positions a target using a linear path to the address set in 
the positioning data or to the position designated with the 
movement amount. 
9.2.2 
9.2.3 
9.2.4 
9.2.5 
Fixed-feed control 
(1-axis fixed-feed control) 
(2-axis fixed-feed control) 
(3-axis fixed-feed control) 
(4-axis fixed-feed control) 
Positions a target by the movement amount designated 
with the amount set in the positioning data.   
(With fixed-feed control, the"[Md.20] Current feed value" 
is set to "0" when the control is started. With   
2-, 3-, or 4-axis fixed-feed control, the fixed-feed is fed 
along a linear path obtained by interpolation.) 
9.2.6 
9.2.7 
9.2.8 
9.2.9 
2-axis circular interpolation control 
Positions a target using an arc path to the address set in 
the positioning data, or to the position designated with the 
movement amount, sub point or center point. 
9.2.10 
9.2.11 
Speed 
control 
Speed control 
(1-axis speed control) 
(2-axis speed control) 
(3-axis speed control) 
(4-axis speed control) 
Continuously outputs the command corresponding to the 
command speed set in the positioning data. 
9.2.12 
9.2.13 
9.2.14 
9.2.15 
Speed-position switching control 
First, carries out speed control, and then carries out 
position control (positioning with designated address or 
movement amount) by turning the "speed-position 
switching signal" ON. 
9.2.16 
9.2.17 
Position-speed switching control 
First, carries out position control, and then carries out 
speed control (continuous output of the command 
corresponding to the designated command speed) by 
turning the "position-speed switching signal" ON. 
9.2.18 
Other 
control 
Current value changing 
Changes the current feed value ([Md.20]) to the address 
set in the positioning data. 
The following two methods can be used. 
(The machine feed value ([Md.21]) cannot be changed.) 
• Current value changing using positioning data 
• Current value changing using current value changing 
start No. (No. 9003) 
9.2.19 
NOP instruction 
No execution control system. When NOP instruction is 
set, this instruction is not executed and the operation of 
the next data is started. 
9.2.20 
JUMP instruction 
Unconditionally or conditionally jumps to designated 
positioning data No. 
9.2.21 
LOOP 
Carries out loop control with repeated LOOP to LEND. 
9.2.22 
LEND 
Returns to the beginning of the loop control with repeated 
LOOP to LEND. 
9.2.23