Rievtech PR-12 Series, User Manual And Programmers Manual

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8.Assignment and function of SM special storage area
SMB0
Always_On SM0.0 Always ON
First_Scan_On SM0.1 ON for the first scan cycle only
Clock_60s SM0.4 30 seconds OFF,30 seconds ON
Clock_1s SM0.5 0.5 second OFF,0.5 second ON
SMB1
Result_0 SM1.0
Set to 1 by the execution of certain instructions when
the operation result = 0
Overflow_Illegal SM1.1
Set to 1 by exec. of certain instructions on overflow
or illegal numeric value.
Neg_Result SM1.2
Set to 1 when a math operation produces a negative
result
Divide_By_0 SM1.3 Set to 1 when an attempt is made to divide by zero
Table_Overflow SM1.4
Set to 1 when the Add to Table instruction attempts
to overfill the table
Table_Empty SM1.5
Set to 1 when a LIFO or FIFO instruction attempts to
read from an empty table
Not_BCD SM1.6
Set to 1 when an attempt is made to convert a non-BCD
value to a binary value
Not_Hex SM1.7
Set to 1 when an ASCII value cannot be converted to
a valid hexadecimal value
The PLC variables addresses of LCD keys:
F1
→ SM191.0
F2 → SM191.1
F3 → SM191.2
F4 → SM191.3
ESC → SM190.0
OK → SM190.1
UP → SM190.2
DOWN → SM190.3
LEFT → SM190.4
RIGHT → SM190.5
When the value of SM192.0 is equal to 1,LCD will be bright.
When the value of SM192.0 is equal to 0,LCD will be dark.
SMW22-SMW26 Scan time
SMW22 Scan time of the last scan.
SMW24 Minimum scan time
SMW26 Maximum scan time