Yaskawa MP920 Motion Module - Manual (Page 352)

7 PO-01 Module Specification and Handling
7.3.3 Motion Monitoring Parameters
7-50
2 General-pur-
pose DI Monitor
(SVSTS) IW††01 Monitors the status of input signals, special-purpose DI signals, or general-purpose DI
signals from the Pulse Motor Driver.
DI00 to DI03 can be used as special-purpose signals for zero point return. DI04 is a
special-purpose signal for emergency stop or deceleration stop.
DI01 to DI03 can also be used as general-purpose DI. The bit configuration is described
below.
Bit 0 Zero Point Sig-
nal or General-
purpose DI
(HW_ZRRO/
DI0) Indicates input 0 signal status. Input 0 serves as a zero point signal
for zero point return. It can be used as general-purpose DI except for
zero point return.
Bit 1 Limit Switch
Signal or Gen-
eral-purpose DI
(DEC/DI1) Indicates input 1 signal status. Input 1 can be used as either a reverse
limit signal for zero point return or a general-purpose DI according
to the setting of bit 2 (Limit Switch Signal Selection) of motion fixed
parameter No. 14 (Additional Function Selections).
For details, refer to 7.3.1 Motion Fixed Parameters.
Bit 2 Reverse Limit
Signal for Zero
Point Return or
General-
purpose DI
(LMT_L/DI2) Indicates input 2 signal status. Input 2 can be used as either a zero
point return limit signal for reverse rotation or a general-purpose DI
according to the setting of bit 3 (Reverse Limit Signal Selection for
Zero Point Return) of motion fixed parameter No. 14 (Additional
Function Selections).
For details, refer to 7.3.1 Motion Fixed Parameters.
Bit 3 Forward Limit
Signal for Zero
Point Return or
General-
purpose DI
(LMT_R/DI3) Indicates input 3 signal status. Input 3 can be used as either a for-
ward limit signal for zero point return or a general-purpose DI
according to the setting of bit 4 (Forward Limit Signal Selection for
Zero Point Return) of motion fixed parameter No. 14 (Additional
Function Selections).
For details, refer to 7.3.1 Motion Fixed Parameters.
Bit 4 Emergency Stop
Signal or Decel-
eration Stop
Signal
(EMRGNCY/
DI4) Indicates input 4 signal status. Input 4 indicates the status of latched
signal rather than actual signal. When Input 4 is input, the signal is
first latched, and then this bit is set to 1 until the Excitation ON Sig-
nal (OB††010) turns OFF and EMRST (OB††01B) turns OFF.
While this bit is set to 1, operation cannot be continued.
The PO-01 Module LEDs will indicate ( ) (first axis), ( ) (sec-
ond axis), ( ) (third axis) and ( )(fourth axis) if this bit is ON.
Bits 5 to 15 Not used. −
3 Calculated Posi-
tion in Machine
Coordinate
System (CPOS) IL††02
-2 31 to 2 31 -1
Indicates the calculated position in a machine coordinate system
controlled by PO-01 Modules.
Normally the position data indicated at this register is the target posi-
tion for each scan.
5 Target Position
Difference Moni-
tor (PTGDIF) IL††04 -2 31 to 2 31 -1 Indicates the amount cleared every scan.
7 to
15 Not used. IW††06 to
IW††0E − −
Table 7.11 Motion Monitoring Parameters (cont’d)
No. Name Register No. Setting Range/
Bit Name
Description