Specifications

7. Application Instructions
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7-35
 Footnote:
Ϩʳ The version V4.9 or above of ES / EX / SS series has this command
(SEGL).
Ϩʳ Version 4.9 of ES / EX / SS series has only a group of 4 digits of 7-step
display and use 8 points to output. It only uses SEGL command one
time in the program and the usage of n operand is n=0~3.
Ϩʳ Scan time must be longer than 10ms when executing this command. If
scan time is shorter than 10ms, please use fixed scan time function to
fix scan time on 10ms.
Ϩʳ Please use suitable 7-step display for the transistor that PLC uses to
output.
Ϩʳ Settings of n: it is used to set the polarity of transistor output loop. It
can be set to positive polarity or negative polarity. what 7-step display it
connects is a group of 4 digits or two groups of 4 digits.
A. Polarity of PLC output
 Output loop of NPN transistor: when inner signal is “ 1” , it will
output low potential. This logic is called negative polarity.
Theory 1
PLC
LOW
Step up
resistor
ON
negative
 Output loop of PNP transistor: when inner signal is “ 1” , it will
output high potential. This logic is called positive polarity.
ON
Theory1
PLC
HIGH
Step
down
resist
+24V
Positive
 7-step display polarity
Positive polarity Negative polarity
Data
input
When high potential, output in
BCD type
When low potential, output in BCD
type
Scan
signal
When high potential, it will
display latched.
When low potential, it will display
latched.
 Settings of parameter n
Group number of 7-step
display group
A group 2 groups
The polarity of PLC output
terminal and display data
input terminal

The polarity of PLC output
terminal and display scan
siganl input terminal
      
n 012 3456 7
: is the same. : is different
Ϩʳ The combination of output polarity of PLC transistor and input polaity of
7-step display can be set by settings of n.
Ϩʳ If output polarity of PLC is negative, input polarity of 7-step display is
also negative and input terminal of scan signal of 7-step display is
positive polarity. n will be 1 when a group of 4 digits and n will be 5
when two groups of 4 digits.