Svon> block fault conditions, Svon> working register – Yaskawa MP2000 User Manual
Page 110
 
TECHNICAL NOTE
<SVON> Block Fault Conditions:
The following table outlines several situations that may cause an error. The block error 
can be cleared by the ENABLE bit going low. 
Internal error bit
Cause
Attention
rdaError 
AB000004 
The RDA is not 
properly set up. 
If Motor Rated Speed (MW3**73) or 
Encoder resolution (ML3**74) is not 
appropriately set up in the RDA, an error 
will occur. Sets bit A of RDA Error ID 
(MW3**81) if error state exists. 
axisinerr 
AB000028 
 
The axis number 
entered on the 
input is not an 
acceptable value 
The function blocks can only control 1 to 
16 axis. Any value greater or smaller then 
this will cause an error. This does not set 
the RDA Error ID. 
RDA_Error 
AB000026 
The module or axis 
number in the RDA 
is not acceptable 
RDA module number MW3**83 refers to 
the address of Module on the rack, and 
can be from 1 to 16. The axis number 
MW3**84 refers to the axis location on the 
module and can be from 1-16. This 
typically would occur if an RDAINIT 
function block is not used for that axis. 
Servo_Alarm/POWER_OFF 
IB**2C0/IB**2C4 
Servo Alarm
Servo amplifier fault occurred or main 
power lost. Sets RDA Error ID (MW3**81) 
bit 6 on if no motor power, and bit 7 if 
there is a servo alarm. 
<SVON> Working Register
This table outlines the data in the forty-five registers used by the function block. There 
is not usually any need for the user to access any of these bits directly. 
Register No
TYPE
Name
Content
AW00000
Bit
0
IN。
Enable
ENABLE
input (XB000000)
Bit
1
IN。
posEnable
POSENABL
input (XB000001)
Bit
2
IN。
negEnable
NEGENABL
input (XB000002)
Bit
3
IN。
Normal
Servo has main power (IB**2C4), no servo alarm (IB**2C0), and 
motion controller is ready (IB**000) 
Bit
4
IN。
rdaError
Goes high if the RDA registers are not set properly
Bit
5
Moving
High when motion is commanded
Bit
6
OUT。
rotary
Goes high if RDA calls for Rotary mode
Bit
7
OUT。
State
Directly controls YB000000 (STATUS  Output). Must be normal 
(AB000003), Servo on must be true (IB**002), and filter set 
must be on (AB00002C). 
Bit
9
OUT。
Mistake
Directly controls YB000001 (ERROR Output)
Bit A
Working
osEnable
Reserved
Bit B
Working
firstPass
One shot coil for initializing Axis and block on for the rising edge 
of enable input 
Bit C
Working
osDisable
Reserved
AW00001
Working
Filter
Rreserved.
AW00002
File: MP2000_IndividualFunctionDocument_RevC 110/168 
Doc Number: eng.MCD.05.101 
11/17/2005