CTI 2572-B / 2500C-2572-B Installation and Operation Manual 14
Multi-Segment Display (MSD)
The Multi-Segment Display (MSD) is located below the status LEDs. During normal operation the MSD will
display certain status information and the TCP/IP address of the module and the subnet mask in CIDR format.
CIDR format is a compact way of displaying the network mask. See APPENDIX C. IP ADDRESS INFORMATION
for more information regarding CIDR format.
Reset Button
Some module functions, such as reading module switch settings or using new IP parameters stored in flash,
are performed only at startup. The Reset Button is a momentary contact switch that allows you to restart the
module without having to cycle power to the base. It is recessed to prevent inadvertent use. To reset the
module, use a small object such as the tip of a ball point pen to depress and hold the switch for approximately
one second. When the switch is released, the module will begin the startup sequence.
NOTE:
To reset the parameters stored in flash memory to factory default values, hold the reset button
down for 10 seconds or more.
Ethernet Port
The 2572-B provides a Category 5e RJ-45 connector which attaches directly to Unshielded Twisted Pair (UTP)
or Shielded Twisted Pair (STP) Ethernet cabling. The port complies with the IEEE 802.3 specifications for
10BaseT and 100Base TX and will operate in either half or full duplex mode. The speed and mode are
automatically negotiated by the module in accordance with IEEE 802.3u specifications. When attaching to a
hub or switch that does not support auto-negotiation, the port will default to 10Mb half-duplex.
3.2. Module Startup
After power is applied to the 2572-B module, when the Reset button is pressed, or when the module is
restarted by software or the reset switch, the module will begin the startup procedure. After the application
firmware is running, all LEDs and MSD segments will be illuminated for approximately one second (multicolor
LEDs will be red for ½ second and green for ½ second), and then will be turned off. This serves a display test
and as an indication that module startup is in process.
AutoStart Mode
If the AUTOSTART option is selected (via SW4), the module will start up using the IP address stored in flash. If
the startup is successful, all module network services, including the embedded web server, CAMP Server,
Modbus TCP Server, and the Ethernet IP server, will be enabled. After startup, the MS LED should be STEADY
GREEN and the Multi-Segment Display (MSD) should display the module IP address and subnet mask (in CIDR
format). The NS LED should be either STEADY RED if a duplicate IP has been detected (indicating the module IP
address is the same as another IP Host on the network) or STEADY GREEN if no duplicate has been detected.
PLC Start Mode
If the PLC START option is selected, the module will start up in a limited function mode using the IP address
stored in flash, enabling only the embedded web server. Then it will wait on the PLC logic to set the IP address
and enable the application servers using the Start Network Services command. While the module is waiting
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