Rockwell Automation 1734-IK Encoder/Counter Modules User Manual User Manual
Page 35
Publication 1734-UM006B-EN-P - August 2005
Input and Output Data 3-3
Bit definitions for the error code are:
E10:
Reserved
E9:
The decimal point position is outside of acceptable range.
E8:
Reserved
E7:
Reserved
E6:
A configuration was selected that requires the scalar and none
was programmed OR Multiple scalars were selected.
E5:
The preset is out of range ( > 0x00FFFFFF).
E4:
A rollover of zero was programmed OR Rollover is out of
range ( > 0x01000000).
E3:
A configuration requiring time base was selected and no gate
interval was set OR Gate interval is out of range ( > 200) OR
Product of time base and gate interval is greater than 3
seconds.
E2:
A time base was entered that is not a multiple of 10 OR Time
base is out of range ( > 3000, or 3 seconds).
E1:
ZF/BF/AF were selected and no filter was programmed OR
Multiple filters were selected.
E0:
A reserved configuration/mode was programmed.
EEPROM Fault status bit (EF) - If a fault is detected with the
EEPROM during power up tests, this bit is asserted to 1. It indicates
that the content of the EEPROM has been corrupted, most likely
caused by loss of power during an executing write.
Not Ready status bit (NR) - Whenever power is applied to the
module, the hardware must be initialized. During this time, the NR bit
will be asserted and the green module status indicator will flash.
Z input Status (ZS) - This bit indicates the present status of the Z
input (1 indicates Z is ON, 0 indicates Z is OFF). This bit is unaffected
by Z Invert, ZI, in the Counter Configuration word.
B input Status (BS) - This bit indicates the present status of the B
input (1 indicates B is ON, 0 indicates B is OFF).
A input Status (AS) - This bit indicates the present status of the A
input (1 indicates A is ON, 0 indicates A is OFF).
C[1,0] Stored data count - This count cycles through [ 0 0 ], [ 0 1 ], [ 1
0 ], [ 1 1 ], [ 0 0 ]
… Each time the stored/accumulated count words are
updated, C[1,0] is incremented. This feature assumes the host’s sample
rate (including network delay and program scan) is as fast or faster
than the frequency of the event that updates C[1,0].