8 serial interface rs232/485, Installation – Lenze EDS4900U-REG User Manual
Page 64
Installation
4-26
48XX/49XXSHB0399
4.3.8
Serial interface RS232/485
Danger!
The interface RS232C/RS485 is not isolated, i.e. an additional electrical isolation
(double basic insulation) to VDE 0106, part 1, (protection against electric shock)
and to VDE 0160 (reduction of interference) is required for host connection.
LECOM-A:
with 2 Lenze level converters 2101IB connected to the host or
another RS 232C electrical isolation.
LECOM-B:
with Lenze level converter 2101IB connected to the host
LECOM-LI:
no additional electrical isolation required
Ensure electrical isolation of the voltage supply!
The controllers can communicate with the host (PLC or PC) via the serial interface
LECOM1 or an operating keypad that works according to the LECOM protocol.
The LECOM1 interface (X6) processes the LECOM-A/B protocol. The
LECOM-A/B protocol is based on the standard ISO 1745 and can be used with
up to 90 controllers. It detects faults and avoids the transmission of faulty data.
Controllers to standard RS232C (LECOM-A) or RS485 (LECOM-B) can be
connected to the LECOM1 interface. The interface can be used for parameter
setting, monitoring, analysis and simple control tasks.
With the RS232C interface, it is possible to create point-to-point connections with
a cable length of up to 15 m. Most PCs or other hosts are equipped with this
interface.
For multiple drives and distances >15m, use the RS485 interface. With only 2 wires
it is possible to connect up to 31 controllers and communicate over a cable length
of max. 1,200 m.
Pin assignment of socket X6:
Pin
Name
Input/output
Explanation
1
+ VCC15
Output
Supply voltage + 15V / 50mA
2
RxD
Input
Receive data cable
RS232C
3
TxD
Output
Transmit data cable
RS232C
4
DTR
Output
Transmission control
RS232C
5
GND
Controller reference potential
6
DSR
Input
(not used)
RS232C
7
T/R (A)
Output/input
RS485
8
T/R (B)
Output/input
RS485
9
+ VCC5
Output
Supply voltage + 5V
The baud rate can be changed under C125 (1200/2400/4800/9600 baud).
Protocol: LECOM-A/B V2.0
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