Eaton ELC-PB, Programming Manual

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3 . I n s t r u c t i o n S e t
M N050 03003E F or mo re infor ma tio n vi sit:
w w w. e a t o n . c o m
3-207
API Mnemonic Operands Function
74 SEGL
S, D, n
7-segment with Latch
Bit Devices Word devices Program Steps
Type
OP
X Y M S K H KnX KnY KnM KnS T C D E F
S * * * * * * * * * * *
D *
n * *
SEGL: 7 steps
ELC ELCB ELCM
PB PC/PA/PH PV PB PH/PA
32 16 P 32 16 P 32 16 P 32 16 P 32 16 P
Operands:
S
: Source address for the 7-segment display
D
: Starting address of 7-segment display outputs
n
: Polarity set-point of output signal and scan signal (
n
=0~7)
Description:
1. 8 or 12 consecutive external output points with the starting address defined by
D
can be
regarded as display and scan signal outputs of 1 or 2 groups of 4 digits for a 7-segment display.
A 7-segment display module has the ability to convert input BCD code to a 7-segment display
and uses a control signal to latch it.
2.
n
will determine the number of groups of 4 digits for a 7-segment display..
3. Each time this instruction executes, it cycles through writing each group of outputs to the
outputs for the 7-segment display, one at a time.
4. For ELC-PB, ELCB-PB series controllers, the instruction can only be used once in the
program.
5. For ELC-PV series controllers, the instruction can be used twice in the program.
6. For ELC-PC/PA/PH, ELCM-PH/PA series controllers, there is no limitation on the times of
using the instruction, but only one instruction can be executed at a time.
7. Flag: When SEGL is completed, M1029 = ON for one scan cycle.
Program Example:
1. When X20=ON, instruction will start to execute. 7-segment display is connected to outputs
Y20~Y27. The value of D10 will be converted to BCD code and sent to the first group for the
7-segment display. The value of D11 will be converted to BCD code and sent to the second
group for the 7-segment display. If any value of D10 or D11 is greater than 9,999, an operation
error will occur.
X20
SEGL D10 Y20 K4
2. When X20=ON, Y24~Y27 will begin cycling ON, one at a time. Each cycle needs 12 scan
cycles. M1029=ON when each cycle completes.
3. 4 digits per group,
n
=0~3