Manual

Troubleshooting
Chapter 7
736
diagnostic message codes are displayed by indicators connected to module group 5, slot 1 (figure 6.18), or by displaying the corresponding
data table word using the industrial terminal.
Use this table in conjunction with figure 7.1 and figure references shown in parentheses.
T ype of Message
N = Nonlatched
L = Latched
T = T rip Condition
Code
P = at Powerup
Alt = Alternate chassis
Ethr = Either chassis
Top = T op chassis
Bot = Bottom chassis
Binary Diagnostic Message (figure References) CodeTypeHex
1111 1100 FC N Backplane error . Replace chassis.
2
1111 1101 FD N Hardware fault in 1771PM module.
2
1111 1110 FE N Hardware fault in 1771PM module.
2
1111 1111 FF N Powerup other 1771PM module.
Microinch Diagnostic Codes
(Examine module group 3, slot 1, bit 2, chassis A and B for MSB)
1 0101 1010 15A T Microinch valve stem input is present though not configured.
1 0101 101 1 15B T Alt Microinch valve stem input is present though not configured.
1 101 1 1100 1BC T Microinch clutch pressure input is present though not configured.
1 101 1 1101 1BD T Microinch clutch pressure input is present when triacs are of f.
1 101 1 1110 1BE T Microinch clutch pressure input is of f when triacs are on.
1 101 1 1111 1BF T Microinch clutch pressure input remains on after triacs turn of f.
1 1 100 0000 1C0 T Ethr T riac 8 is on when commanded of f.
1 1 100 0001 1C1 T Ethr T riac 9 is on when commanded of f.
1 1 100 01 10 1C6 T Bot T riac 8 is on when commanded of f.
1 1 100 01 11 1C7 T Bot T riac 9 is on when commanded of f.
1 1 100 1 100 1CC T To p T riac 8 is of f when commanded on.
1 1 100 1 101 1CD T To p T riac 9 is of f when commanded on.
1 1 101 0010 1D2 T Ethr T riac 8 is of f when commanded on.
1 1 101 001 1 1D3 T Ethr T riac is of f when commanded on.