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Serial/Ethernet Communication Module
The optional Serial/Ethernet Communication Module can be equipped for Serial,
Ethernet or both simultaneously for dual or redundant communications.
The Serial Communications (Option SPT) provides RS-232/485 serial data
using Modbus, DNP or ASCII protocols.
The Modbus protocol can be configured as Modbus RTU or Modbus ASCII and
supports operation as a Master or Slave device. It can transmit alarm status
from the field contacts or receive alarms through the protocol.
The DNP protocol supports operation as a Slave device transmitting the alarm
status of the field contacts.
The ASCII protocol is only used in conjunction with the Time Stamping of
Alarms Option (SER or SERFR) continually streaming any alarm or return to
normal events. When Modbus or DNP is used with the Time Stamping of
Alarms Option (SER or SERFR), it provides the time and date of the alarms and
return to normal events.
The Serial Communication Module can be configured via jumpers for RS-
232/485 communications. It can be configured via software for all Modbus and
DNP settings.
The Ethernet Communications (Option ETH) is used for simultaneous
communications using Modbus TCP/IP or DNP protocols.
The Modbus TCP/IP protocol can be configured for Master or Slave operation.
When configured as a Modbus Slave, it can communicate to multiple Modbus
Master devices simultaneously via TCP/IP connectivity. When configured as a
Modbus Master, it can communicate to a single Modbus Slave device. The
Modbus protocol is used to transmit the alarm status or can be used to receive
alarms for annunciating the windows. When receiving alarms, the digital inputs
are not required, unless the two operate in parallel with an alarm generated from
either a digital input or Modbus data.
The DNP protocol supports operation as a Slave device transmitting the alarm
status of the field contacts.
When Modbus or DNP is used with the Time Stamping of Alarms Option (SER
or SERFR), it provides the time and date of the alarms and return to normal
events.
All configuration of serial and Ethernet connections is done via configuration
software.
This module is a 2 board assembly; a carrier card, and a communications card.
This 2 board assembly mounts to the CSM module.
Series 90B ANNUNCIATOR INSTALLATION AND CONFIGURATION MANUAL
i.
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