Siemens LMV5 Quick Start Manual page 207

AZL5 interface
General
Note
LMV5 QSG Rev 4
The AZL... serves the Modbus via its COM2 port (8-pole Western jack RJ45). The port is
assigned to the functional low-voltage range.
Assignment of RJ45 pins:
PIN
1
2
3
4
5
6
7
8
When preparing and fitting a connecting cable between the AZL... and a converter, it is to
be noted that PIN 5 and PIN 7 can deliver a current of 5 mA each. Adequate insulation
against other potentials must be ensured.
The maximum permissible data line length between COM2 and a converter is 3 m. In ex-
ceptional cases, this data line length can be exceeded, depending on environmental condi-
tions (electrical interference) and the type of cable used – without Siemens assuming re-
sponsibility.
To ensure protection against electric shock hazard, it must be made certain that AC 230 V /
AC 120 V lines are strictly separated from the functional low-voltage area.
CAN X70
PIN
2 CAN L
3 GND
4 VAC 2
7 CAN H
8 VAC 1
COM1 X71
PIN
2 RXD
3 TXD
5 GND
COM1 (PC port) ad COM2 cannot be active at the same time!
Sec 8 Pg 13
TXD (RS-232 level or V28)
Not used
RXD (RS-232 level or V28)
GND
U1 (typically +8.2V)
GND
U2 (typically -8.2V)
Not used
CAN
8 7
9 6
5 1
4 3 2
X70
COM 1
X71
7 8
6 9
1 5
2 3 4
COM2 X72
PIN
1
COM 2
3
4, 6 GND
8 1
5
7
X72
www.scccombustion.com
TXD
RXD
U 1
U 2