The Babel Buster Pro creates a Modbus interface for UPS systems by converting SNMP to Modbus. The Babel Buster Pro acts as a protocol translator, converting variables found in the SNMP MIB to Modbus registers. You may then use Modbus to monitor the UPS from your PLC.
The Babel Buster Pro includes features designed specifically to handle alarm tables found in the MIB of SNMP enabled UPS systems. The standard UPS MIB is defined in RFC 1628, but manufacturers often have their own proprietary MIB as well. The Babel Buster Pro can handle either.
The alarm table in RFC 1628 is "sparse" meaning its table entries are only present if an alarm is present, and the table is empty if there are no alarms. One cannot simply query specific OIDs to determine presence of an alarm. Alarms are implied by presence of a table entry that only exists while the alarm is present. Furthermore, the alarm table is simply a circular buffer of alarm entries, and the table index means nothing.
The Babel Buster Pro includes an automatic table walker with multiple algorithms for walking different types of tables, including the alarm table in RFC 1628. The Babel Buster Pro also has the ability to directly query OIDs that are always present, such as input voltage. The results of the table walking and polling of the UPS are placed in Modbus registers which may be read by any other Modbus device such as a PLC. Therefore, the Babel Buster Pro allows your PLC to monitor any SNMP enabled UPS system.
Follow these links to read more about the Babel Buster Pro models. You will find detailed information for each model, including User Guide and introductory videos.
Babel Buster Pro for Modbus is available in two styles. The Pro-V210 is DIN rail mounted, and the SPX Pro is panel mounted. The functions of both models are identical.