262
RS-232C Units
Section 6-2
6-2-3
Specifications
General Specifications
RS-232C Communications Specifications
Item
Specification
Models
DRT1-232C2
Input points
Inputs: 2 ports max.
(One word is used in the IN Area to detect the communica-
tions status.)
Communications power
supply voltage
11 to 25 V DC
(Supplied from the communications connector.)
Internal power supply
voltage
20.4 to 26.4 V DC (24 V DC, –15 to +10%)
Current consumption
Communications: 50 mA max.
Internal circuits: 100 mA max.
Noise immunity
Internal power supply normal:
±
600 V
Internal power supply common:
±
1.5 kV
Pulse width: 0.1 to 1
μ
s
Pulse rise time: 1 ns
(via noise simulator)
Vibration resistance
10 to 150 Hz, 1.0-mm double amplitude or 69 m/s
2
Shock resistance
200 m/s
2
Dielectric strength
500 V AC, 50/60 Hz for 1 min, leakage current: 1 mA max.
(between DC power supply and FG)
Insulation resistance
20 M
Ω
min. at 100 V DC (between DC power supply and
FG)
Ambient temperature
–10 to 55
°
C
Ambient humidity
25% to 85% (with no condensation)
Operating atmosphere
No corrosive gases
Storage temperature
–25 to 65
°
C
Mounting
M4 screw mounting or DIN 35-mm track mounting
Mounting strength
100 N
Track direction: 10 N
Terminal strength
100 N
Weight
250 g max.
Item
Specification
Communications
method
All dual communications, Start-stop synchronization
Baud rate
19,200/9,600/4,800/2,400/1,200 bps
Transmission code
ASCII (7-bit), JIS (8-bit)
Parity
Even, odd, none
No. of stop bits
1 or 2 bits
RS-232C ports
2 ports
Connectors
D-sub 9-pin connector for 2 ports
Transmission memory
capacity
1,024 bytes for 2 ports
Frame length
1,024 bytes max. (FIFO)
Header code
Enable/disable
(Header code: 1 byte when enabled.)
Delimiter code
Enable/disable
(Delimiter code: 1 byte when enabled.)
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