CONTREX CX-1200 - Manual (Page 230)

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ALARMS AND LIMITS P2/2
The Alarms & Limitsscreen (page 2) displays the bit-mapped Monitor Parameters that monitor the status of
the Limits, Alarms and Custom Alms. Use either the Appendices: Appendix C or the “Help” screen to
preview the bit map lists.
Active Blk
Active Block (MP-51) displays the active block (0-7). The block can be selected and made active by the Block select
bits (Blk Sel A,B.C), in the PLC Programming screen if Blk Sel Source (CP-478) is set to “1” (DigIn & PLC). Or the block
can be selected and made active by the keypad if Blk Sel Source (CP-478) is set to “2” (Keypad Blk Sel).
InvalidBlks
Invalid Blocks (MP-52) displays the status of the blocks in the Block Setup screens. A “1” indicates that there is an
error with the corresponding block. Generally, this indicates that an overflow condition can occur if the corresponding
block is activated. In addition, since other parameters are used in conjunction with the Block Parameters that you
selected, an error can result from a parameter that is not selected in Block Parameters. If a bad block is activated, the
CX-1200 will execute an F-Stop until either the block error is corrected or a another block is activated.
Misc Status
Miscellaneous Status (MP-53) displays various status conditions. A “1” in the Drive Enable bit indicates a drive
enabled output. A “1” in any other bit location indicates an active condition. Refer to Appendices: Appendix C for
the Misc Status (MP-53) bit map list.
Std Alarms
Std Alarms (MP-54) displays various alarm conditions . A “1” in any bit location indicates an active condition. Refer
to Appendices: Appendix C for the Std Alarms (MP-54) bit map list.
Custom Alms
Custom Alarms (MP-55) displays the outputs of the PLC numerical comparators. A “1” in bit locations 0-3 indicates
that the result of the compare (Cmprx Parm value vs. Cmprx Val) is true for the given Cmprx Type. A “1” in bit locations
4-7 indicates that the result of the compare (Cmprx Parm value vs. Cmprx Val) is false for the given Cmprx Type (the
NOT is true). Refer to CP-380 through CP-395. Refer to Appendices: Appendix C for the Custom Alms (MP-55) bit map
list.
Misc Alarms
Misc Alarms (MP-56) displays various alarm conditions . A “1” in any bit location indicates an active condition.
Refer to Appendices: Appendix C for the Misc Alarms (MP-56) bit map list.