Honeywell 5701 Operating Instructions Manual page 37

MAN0443.P65 Issue 13 Aug 04
05701-M-5001 A02279
CHAPTER 2 - SYSTEM DESCRIPTION
One of four optional modules may be fitted to the Engineering Card:
a. Master Alarm Update Module
This facility provides an indication when a new alarm occurs on any
channel in the rack, even if a previous alarm condition already
exists.
b. Event Printing Module
This facility provides time stamped reporting of alarm and fault
events as they occur and system status at predetermined regular
intervals.
c. Modbus Interface Module RS422/485
This facility provides for digital communication between the
System 57 Control System and an external computer system using
the RS422/485 serial data format and the Modbus communication
protocol.
d. Modbus Interface Module RS232
This facility provides for digital communication between the
System 57 Control System and an external computer system using
the RS232 serial data format and the Modbus communication
protocol.
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5701 Control System