Rockwell Automation 1746-HSRV SLC Servo Control Module User Manual - Manual (Page 151)

Publication 1746-6.1.2 - July 2000
9-8 Programming System Variables
If the Set In-Position Band command fails, the SLC processor is
notified with an appropriate error message.
Typical Set In-Position Band Move Data Tables
Before executing a Set In-Position Band move, set Source B for the
Equal instruction in Figure 9.1 to 256. A Set In-Position Band
command to 0.1 is initiated if the float data table is:
And the integer data table is:
Using the Set Excess FE Limit Command
The Set Excess Following Error (FE) Limit command sets the online
excess FE limit to equal the specified value. The units for the excess
FE specified are position units. If the Set Excess FE Limit command
fails, the SLC processor is notified with an appropriate error message.
Set Excess FE Limit parameters for word 5, bit 9 appear in the table
below.
1 Location can vary depending on other bits simultaneously set in the most significant byte of word 5 (up to three of
these bits can be set simultaneously). These bits are evaluated from right to left. Words 6 and 7 are used for
the first set bit encountered. Words 8 and 9 are used for the next simultaneously set bit. Words 10 and 11 are
used for the last simultaneously set bit. This special feature can be used to make servo axis tuning easier.
2 s = Slot number for the SLC Servo Module.
The Set Excess FE Limit command can be issued anytime after the
control is powered up. Refer to the example in Using the Set Axis Gain
Command.
Word 0 (Position) 1 2 3 4 5
F27:0 0.1
Word 0 1 2 3 4 5
N32:0 0 0 0 0 0 256
Block Command Parameters
Location
1, 2 Format Possible Values Default
Bit Specifications O:s.4 Bits 0000 0000 0000 0000 0
Set Excess FE Limit O:s.5 Bits XXX XX1X 0000 0000 0
FE Limit O:s.6-O:s.7 Float 0.0 to +axis travel limit 0.0