System And Service Interfaces - Protrol IPS2 24 VDC Manual

4.3 System and service interfaces

The IPS2 unit has a system interface for RTU communication and a service interface for handling of
transient fault recorder data.
A hardware and a protocol configuration must be made to switch between the two different interfaces.
Hardware configuration is made with a jumper on a 3-pole header, see the coming chapter "IPS2 24 VDC
Main Printed Circuit Board Rev. " for details.
The device protocol is switched by pressing and holding the ACK button until the changed mode is indicated
by a short flash on the I> or I
System interface
The physical port for the system interface is the RS485 port (X5), see the chapter "Schematic Overview" for
connector placement.
The jumper in the 3-pole header must be placed in position 2 – 3 for RS485 communication.
The device protocol is switched by pressing and holding the ACK button until the changed mode is indicated
by a short flash on the I
The device is always initiated, after a power down or reset, with the system interface protocol activated.
Service interface
The physical port for the service interface is the internal RS232 port, see chapter "IPS2 24 VDC Main Printed
Circuit Board Rev. " for details.
The jumper in the 3-pole header must be placed in position 1 – 2 for RS232 communication.
The device protocol is switched by pressing and holding the ACK button until the changed mode is indicated
by a short flash on the I> LED.
Please observe that the IPS2 is always initiated, after a power down or reset, with the system interface
protocol activated.
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