Instruction manual

7. TRANSMISSION MODULE
7 − 4
(1) Gear ratio
(a) The gear ratio is the setting which determines the number of output pulses
that are transmitted to the output shaft for every pulse from the drive
module.
(b) The gear ratio is determined by the settings for the number of gear teeth at
the input shaft (GI) and the number of gear teeth at the output shaft (GO).
Number of gear teeth at input shaft (GI)
Gear ratio =
Number of gear teeth at output shaft (GO)
(2) Direction of rotation of output shaft
(a) This is the setting for the direction of rotation of the output shaft with
respect to the direction of rotation of the input shaft.
(b) There are two directions of rotation for the output shaft: forward and
reverse.
1) Forward
When the input shaft rotates in the direction in which addresses increase,
the output shaft also rotates in the direction in which addresses increase.
Drive module
Input shaft rotating
in direction in
which addresses
increase
Output shaft rotates in direction in
which addresses increase
Gear
2) Reverse
When the input shaft rotates in the direction in which addresses increase,
the output shaft rotates in the direction in which addresses decrease.
Drive module
Gear
Input shaft rotating
in direction in
which addresses
increase
Output shaft rotates in direction
in which addresses decrease
POINT
If the gear ratio is specified indirectly, the gear ratio set in the sequence
program is made valid is when:
1) The real mode is switched to the virtual mode; or
2) The current value of the drive module is changed in the virtual mode.