AMETEK ASD Series User Manual
Page 79
Sorensen ASD Series
Programming: Digital Interface Control
M551177-01 Rev A
4-21
4.5.1 ETHERNET – MODBUS-TCP
The Ethernet port is configurable for either Modbus TCP (default) or
Modbus RTU which is transmitted and received using an internal
Lantronix XPort-04 Ethernet TCP/IP server. For more details on the
XPort-
04 see the XPort User Guide at the manufacturer’s website.
The Ethernet digital interface is shipped DHCP-enabled using port 502 for
Modbus communications. There is a label on the back of each unit with
the XPort MAC Address for acquiring the IP Address of the unit.
Information for reconfiguring the XPort-04 Ethernet settings can be found
in the XPort User Guide found at the above link to the manufacturer’s
website. Do not modify the XPort-04 serial settings because this may
cause an internal loss of digital communications.
4.5.2 SERIAL – MODBUS-RTU
The serial interface uses RS-485 half-duplex serial communications with
the following configuration for carrying the Modbus RTU data:
Baud rate: 230,400 bps
Flow control: none
Data bits: 8
Parity: none
Stop bits: 2
The RJ-45 connector for the Serial Interface uses the Modbus Interface
standard pin-out (www.modbus.org). This is shown in Table 4-13
Table 4-13. Pin-out of the RJ45 Serial Port
Pin
Signal
1-3
n/u
4
RS485_B
5
RS485_A
6
n/u
7
24V
8
Ground
Shield
Chassis Ground