Siemens MC35 User Manual

Migration from MC35 to MC35i
PRELIMINARY
Migration from MC35 to MC35i
15 of 30 12.03.03
4.4.4 Battery pack
MC35i has no charging management for external batteries.
4.5 RTC backup
MC35 and MC35i are fully identical regarding the internal Real Time Clock.
4.6 Control signals
Input and Output control signals are identical with both MC35 and MC35i device.
4.7 Interfaces
MC35 and MC35i interfaces are compatible. The following chapters shows a detailed
comparison values for each interface. For further information please consult the MC35i HW
manual.
4.7.1 Serial interface
Each device uses the same serial interface (compliant with ITU-Standard V.24) with
identical pin positions.
The table below shows a comparison of values for the serial interface with both devices.
Table 9: Serial interface
Serial interface
Feature MC35 MC35i
Type: Serial asynchronous transmitter and receiver conforming to ITU V.24 Interchange Circuits DCE.
Signal level
V
out,low,max
= 0.2V @ I = 0.1mA
V
out,high,min
= 2.25V @ I = -0.1mA
V
out,high,max
= 2.76V
V
in,high,min
= 1.95V
V
in,high,max
=3.3V
V
out,low,max
= 0.3V @ I = 0.1mA
V
out,high,min
= 2.25V @ I = -0.1mA
V
out,high,max
= 2.73V
V
in,high,min
= 1.95V
V
in,high,max
= 3.45V
Local character framing:
fixed to 8 data bits, no parity and 1 stop bit
Selectable baud rate Fixed range (300bps...115kbps)
Autobauding (1.2kbps...115kbps)
Fixed range (300bps...230kbps)
Autobauding (1.2kbps…230kbps)
Flow Control RTS0 / CTS0 and/or software flow control via XON / XOFF.

Siemens MC35 Specifications

General

Brand	Siemens
Model	MC35
Category	Control Unit
Language	English