Longo programmable controller LPC-2.C06
5 INSTALLATION
5.1 Connection scheme
Figure 2: Connection scheme
Table 2: RS485
1
RS485.4
GND
RS485.5
RS-485 (A)
RS-485 standard voltage levels
RS485.6
RS-485 (B)
Table 3: RS232
RS232.1
GND
RS232.2
RS-232 (Tx)
S1 Position 1-2 (RS232) RS-232 standard
→
voltage levels
S1 Position 2-3 (TTL) 0 .. 5 V
→
RS232.3
RS-232 (Rx)
Table 4: K1
Internal BUS
Data & DC power supply
Connection to I/O module
1
Wires connected to the module must have cross sectional area at least 0.75 mm
2
. Minimum temperature rating of wire
insulation must be 85 °C.
7