2. Hardware
12
Serial Port Connectors
MESR424 Modbus Gateways use a variety of serial port connector configurations,
depending on the model:
Figure 8. DB-9 Female Serial Port Connector
Figure 9. Five-Position Pluggable Terminal Block
Model Number
Ethernet Port 1
Ethernet Port 2
Serial Ports
MESR424D
10/100 RJ45
10/100 RJ45
RS-232/422/485 (DB9 male)
MESR424D-MT
10/100 RJ45
Multi-mode (ST)
RS-232/422/485 (DB9 male)
MESR424D-SC
10/100 RJ45
Single-mode (SC)
RS-232/422/485 (DB9 male)
MESR424T
10/100 RJ45
10/100 RJ45
RS-232/422/485 (Terminal Block)
MESR424T-MT
10/100 RJ45
Multi-mode (ST)
RS-232/422/485 (Terminal Block)
MESR424T-SC
10/100 RJ45
Single-mode (SC)
RS-232/422/485 (Terminal Block)