Azbil C1M - Input Bit Functions

5-51
Chapter 5. Functions
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Input bit functions
There are four types of input bit functions. With this item, the function to use can
be selected or all functions can be disabled.
Item (bank) Display Description Initial value User level
Internal contact 1 input bit
function
(DI assignment bank)
DI1.2
0: Not used (use the default input)
1: Function 1, (A and B) or (C and D)
2: Function 2, (A or B) and (C or D)
3: Function 3, (A or B or C or D)
4: Function 4, (A and B and C and D)
0 Advanced
Internal contact 2 input bit
function
(DI assignment bank)
DI2.2
0
Internal contact 3 input bit
function
(DI assignment bank)
DI3.2
0
Internal contact 4 input bit
function
(DI assignment bank)
DI4.2
0
Internal contact 5 input bit
function
(DI assignment bank)
DI5.2
0
• If 0 is set, input bit functions are not used and the default input is used. The
default input for each internal contact:
Internal contact 1: Digital input (DI) 1
Internal contact 2: Digital input (DI) 2
Internal contact 3: OFF state
Internal contact 4: OFF state
Internal contact 5: OFF state
• An input bit function is a combination of logical functions (AND, OR) for each
of the internal contacts 1 to 5. Functions 1 to 4 have different combinations of
logical functions. The following explains each logical function:
AND function OR function
OFF and OFF = OFF OFF or OFF = OFF
ON and OFF = OFF ON or OFF = ON
ON and ON = ON ON or ON = ON
• OFF may be expressed by contact open (OPEN) or the number 0.
• ON may be expressed by contact closed (CLOSE) or the number 1.