Toshiba GR-200 Series Instruction Manual page 516

used for 'Quality' can be found immediately below Table 4.2-2.
Input(A)
Input(B)
Figure 4.2-5 Logic of interlock operator (AND) and Input/Output signals
OR interlock operator
When quality information (Quality) is applied to the interlock operator "OR", the quality
information is affected by device status (stVal). Table 4.2-4 shows two-input-signals (A, B) and
the output signal for "OR"
Table 4.2-4 Output signals (stVal–Quality) of OR
Input A
(stVal–Quality)
As shown in Table 4.2-4, if '0' represents the status value "stVal" for all input signals, and
if the quality information of "NG" is given for an input signal, then the output signal "Quality"
is represented as "NG". On the other hand, if all input signals "stVal" are represented by "1",
and if the quality information for the input signals "stVal(1)" is given, then the representation
"OK" can be weighted for the output signal "Quality" . Note that quality information (OK) for
input signals with "stVal(1)" get priority if there are two or more input signals, which are
represented as "stVal(1)".
Figure 4.2-6 shows the logic symbol for the interlock operator "OR" with input signals and an
output signal, which can be represented by equations (4.2-13) and (4.2-14).
Input(A)
Input(B)
Figure 4.2-6 Interlock operator (OR) and Input/Output signals
stVal=stVa(A)+stVa(B)
Quality=!((stVal(A)•!Quality(A))•(stVa(B)•!Quality(B))+
!(stVal(A)+Quality(A)+stVal(B)+Quality(B)))
AND (• )
stVal
Quality
stVal
Quality
Input B (stVal–Quality)
0–OK
0–OK 0–OK
0–NG 0–NG 0–NG
1–OK 1–OK
1–NG 1–NG 1–NG 1–OK 1–NG
OR (+)
stVal
Quality
stVal
Quality
- 497 -
stVal
Output
Quality
0–NG 1–OK 1–NG
– – –
– –
1–OK 1–OK –
stVal
Output
Quality
6F2T0200 (0.15)
(4.2-13)
(4.2-14)
GRE200 (1,2)