Pin Assignment X9; Circuitry Overview X9; Connecting Rs485 Devices To X9 - SMA DATA MANAGER M Operating Manual

SMA Solar Technology AG
6.9.2

PIN assignment X9

RS485 input X9
6.9.3

Circuitry overview X9

Figure 14: Connection of an RS485 device
6.9.4

Connecting RS485 devices to X9

Requirements:
☐ The same baud rate (1200 baud, 9600 baud or 19200 baud) must be set in all RS485
devices.
☐ The connection cable is prepared for connection to the multipole connector (see Section 6.3,
page 30).
Operating manual
Row Pin
(User interface)
B 1
(COM2RS485)
2
3
4
5
6
A 1
(COM1RS485)
2
3
4
5
6
Assignment
Data+ (D+)
Do not use
Ground (GND)
Data- (D-)
Line termination (optional)
Line termination (optional)
Data+ (D+)
Do not use
Ground (GND)
Data- (D-)
Line termination (optional)
Line termination (optional)
RS485 device
EDMM-20-BE-en-10
6 Connection
39