Red Lion GEMINI 33 - Manual (Page 12)

CODE 43 - INPUTS A & B RESPONSE MODES (Cont’d)
[43 6] QUADRATURE TIMES 4 - This mode takes the quadrature mode, with
two edge counting, one step further. In quadrature times 4, both Input A and
Input B serve as the count or quadrature input, depending on their state. In
one instance, Input A will serve as the count input and Input B will serve as
the quadrature input. In another instance, Input A will be the quadrature
input and Input B will be the count input. This enables each edge, positive
and negative going, of both inputs, A and B, to be counted. This results in a
resolution four times greater than in the basic quadrature x1 mode.
CODE 44 - NUMBER OF COUNT EDGES
The Gemini 3300 can be programmed for either single (negative going edge)
or two edge (x2) counting. The number of count edges cannot be set when the
count mode is programmed for quadrature x4 operation. The Gemini will ignore
any attempt to enter Function Command Code 44 when set for quadrature x4.
[44 1] SINGLE EDGE COUNTING (x1) - The unit counts on the negative
going (falling) edge of the count input signal. The count mode descriptions
describe how each mode uses this method of edge counting.
[44 2] TWO EDGE COUNTING (x2) - This mode is used when doubling of the
count signal input is required. The unit counts on the positive going (rising)
edge of the count input signal, as well as the negative going (falling) edge.
CODE 45 - SCALE MULTIPLIER
There are four Counter B Scale Multipliers that are available. They
effectively divide the internal Process and Total Count Values by 1, 10, 100,
and 1000 respectively, to yield the displayed values. (Note: Use of a small
scale multiplier in conjunction with a small Scale Factor could cause the
internal count value to be exceeded before the 6-digit display value is
exceeded.) See “Overflow Indication” section for more details.
[45 1] x1
[45 2] x 0.1
[45 3] x0.01
[45 4] x0.001
CODE 46 - DECIMAL POINT & LEADING ZERO BLANKING
There are six basic modes of decimal point placement for the Process and
Total counter of the Gemini 3300. The decimal point is placed to the right of
the display digit that corresponds to the mode identifier. (The right most
decimal point, digit 1, is never turned on.) A “-” sign in front of the mode
identifier will inhibit leading zero blanking. The absence of a “-” sign will
enable leading zero blanking.
[46 1]
0
[46 2] 0.0
[46 3] 0.0 0 LEADING ZERO
[46 4] 0.0 0 0 BLANKING
[46 5] 0.0 0 0 0
[46 6] 0.0 0 0 0 0
[46 -1] 0 0 0 0 0 0
[46 -2] 0 0 0 0 0.0
[46 -3] 0 0 0 0.0 0 LEADING ZERO
[46 -4] 0 0 0.0 0 0 BLANKING INHIBITED
[46 -5] 0 0.0 0 0 0
[46 -6] 0.0 0 0 0 0
CODE 52 - OUTPUT 1 TERMINATION MODES
The Gemini 3300 has five “Output 1 Termination Modes”, which control
the way Output 1 (O1) will terminate or reset. An Output 1 response will
occur when the Process Counter reaches the Preset 1 Value (when counting in
the “normal” count direction). In all modes, Output 1 will terminate
immediately when the Process counter is manually reset.
A reverse phase mode is available on the Gemini 3300. This refers to the
complementing of the logic state of the output. With normal phase operation,
when the Process counter value reaches Preset 1, Output 1 will turn on. The
reset condition of Output 1 is output off. In reverse phase operation, Output 1
turns off when Preset 1 is reached. The reset condition of Output 1 is output
on. (Note: The state of the relay, if used, is also reversed.) A “-” sign in front
of the mode identifier will provide for reverse phase operation. The absence
of a “-” sign will indicate normal phase operation.
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