Communication Specifications - OE Max Controls NX7 Installation Instructions Manual

Communication Specifications

COM1 (9-pin female D-Sub)
COM2 (8-pin female RJ45)
Comm. Status LEDs
(Flashes during
communication)
Item
Interface
Baud rate
Protocol
Data bit
Parity
Stop bit
Communication
distance
Termination resistance
Transmission cable
COM1: RS-232C or RS-485, 9-pin D-Sub
• DIP switch
• NX7s controllers support RS-232C only on COM1.
COM2: RS-232C or RS-485, 8-pin modular
• Automatically recognized (wiring method)
• NX7s controllers support RS-485 only on COM2.
• 38400, 19200, 9600, and 4800, automatically selected
(But, the speed is limited for COM2 user-defined
communications.)
• Reset after pausing communication, for more than one
minute, to change the speed.
Half duplex asynchronous polling
8 bits
None
1 bit
RS-232: 15 m or less, RS-485: 1.2 Km or less
COM1: adjusted by the internal DIP switch
COM2: external user wiring (150
Twisted pair cable (Shielded cable)
COM1 DIP Switch
(applicable for
only)
RS-232C/RS-485
select switch
Specifications
Ω
resistor recommended)
NX7 controllers
Termination
resistance
setting switch
27