Rockwell Automation 1746-QV,D17466.18 OPEN-LOOP VELOCITY CONTL - Manual (Page 31)

Appendix
C
Publication 1746-6.18 April 1998
SLC Processor Files
You use the following files when programming the SLC processor
for an application with the 1746-QV module:
•
input image table to indicate status
•
G file to configure the module for its LDT
•
output image table for commands and loading profiles
Word 0 (I:e.0 or N7:60 in the ladder program) reports status such as
hardware faults, your data-entry errors, and acknowledgement of
profile data stored in the module. Word 1 reports position data.
Words 2-7 report speeds of the previous profile.
Word #: Bit #: Description: (for error & fault bits 0-8, status of 0 = OK, status of 1 = fault.)
0 0 The module sets this LDT error bit when it detects a:
– broken or mis-wired LDT cable
– faulty LDT
– incompatible LDT type (DPM or RPM)
– missing LDT magnet
– loss of
"15V dc PS
1 Module fault, such as EEPROM error. May turn outputs OFF (fault dependent)
2 The module sets this bit when it detects any of the following invalid command bits or bit
combinations in output image table word 0 (O:e.0):
– one or more of the reserved bits 9-15 were set
– bit 5 or 7 (position) was set concurrently with bit 6 or 8 (voltage)
– output enable bit 0 (extend) or 1 (retract) was set before loading valid profiles
– both output enable bits 0 (extend) and 1 (retract) were set concurrently
– started to run a profile after the module had flagged an LDT error (I:e.0/0)
3 You set one or more of the reserved bits 0-13 in G-file word 5 (Ge:5).
4 You entered an invalid length (word 3) or count (word 4) in the G file.
5 You entered an invalid LDT calibration (words 1 and/or 2) in the G file.
6 You entered a position setpoint outside the range of –32,768 to +32,767 in O:e.1-O:e.7.
7 You entered a voltage value outside the range of
"10,000mV in O:e.1-O:e.7.
8 Loss of sensor. The module detected position data (in I:e.1) greater than the LDT
length plus the preset reference. Clear this bit by running a profile.
9-11 Reserved. Do NOT use.
12 The module sets this bit after it stores the retract position setpoints or voltage values, or
when the retract profile is active. It remains set until another operation is performed.
13 The module sets this bit after it stores your position setpoints.
It resets it after you reset the “program position” bit (O:e.0/5 or O:e.0/7)
14 The module sets this bit after it stores your voltage values.
It resets it after you reset the “program voltage” bit (O:e.0/6 or O:e.0/8)
15 The module sets this bit when it detects the profile is active (output is applied).
1 n/a Position data
2-7 n/a Speed segments 1-6, respectively.
The module computes the speed of each segment and reports them in the subsequent
profile (reports extend speeds during the next retract profile, etc.)
Input Image Table