Siemens MC35 Specifications download pdf (Page 36)

MC35i Terminal Hardware Interface Description

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MC35i_T_HD_v02.00a Page 36 of 42 16.02.2007

Table 21: On/Off control line specifications (requirements)

Parameter Description Conditions Min. Typ Max. Unit

high

active high 5 V

low

Input voltage

/IGT_IN, /PD_IN

2 V

high

active high 3 +15 V

low

Input voltage

/DTR

-15 1.2 V

Input resistance of

/IGT_IN, /PD_IN

47 kOhm

Input resistance of

/DTR

4 6 8 kOhm

D_IGT

Duration of active high

/IGT_IN, /DTR

200 ms

D_PD

Duration of active high

/PD_IN

3.5 s

R_IGT

Rise time /IGT_IN for

power up

0% to 100% 20 ms

R_RTS

Rise time /DTR

for power up

0% to 100% 20 ms

D_passive

Duration passive (low)

of /IGT_IN, /DTR before

restart

after power down 500 ms

Table 22: RS-232 interface specifications (requirements)

Parameter Description Conditions Min. Typ Max. Unit

OUT

Transmitter output

voltage for

/RXD, /CTS, /DSR,

/DCD, /RING

@ 3kOhm load

±5 ±6 ±7

OUT

Transmitter output

resistance

/RXD, /CTS, /DSR,

/DCD, /RING

300 Ohm

Resistance

/TXD, /RTS, /DTR

3 5 7 kOhm

Receiver input voltage

range

/TXD, /RTS, /DTR

-15 +15 V

RIHYS

Input hysteresis 0.2 0.5 1 V

Ilow

Input threshold low 0.8 1.2 V

Ihigh

Input threshold high 1.7 2.8 V

Autobauding 4.8 115 kbps Baudrate

Fixed range 0.300 115 kbps

Cable

Length of RS-232 cable 1.8 2 m

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 42

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