Alarms Set Up Group; Communications Set Up Group; Table 4-4 Alarms Group Function Prompts; Table 4-5 Communications Group Function Prompts - Honeywell 7866 Operation And Maintenance Manual

Set Up Mode
4.4

Alarms Set Up Group

Function Prompts
Table 4-4 lists all the function prompts in the Alarms Set Up group. The alarms are set to operate in Range
3 only. Refer to Section 5.8 Setting the Alarm Limits for the alarm adjustment procedure.
Function Prompt
(Lower Display)
ALARM1LO Alarm 1 Setpoint, low alarm type
ALARM2LO Alarm 2 Setpoint, low alarm type
HYSTERiS Alarm Hysteresis
4.5

Communications Set Up Group

Introduction
The Communications group lets you configure the controller to be connected to a host computer via
®
Modbus or Ethernet TCP/IP protocol.
A controller with a communications option looks for messages from the host computer. Up to 99 addresses
can be configured over this link. The number of units that can be configured depends on the link length,
with 31 being the maximum for short link lengths and 15 drops being the maximum at the maximum link
length.
Function Prompts
Function Prompt
Lower Display
Com ADDR
ComSTATE
36 7866 Triple Range Digital H

Table 4-4 Alarms Group Function Prompts

Function Name

Table 4-5 Communications Group Function Prompts

Selections or
Range of Setting
Upper Display
1 to 99
DISABLE
MODBUS
ETHERNE
and CO Analyzer/Indicator - Operation and Maintenance
2 2
Selections or Range of Setting
(Upper Display)
90.0 to 100.0
90.0 to 100.0
0 to 100.0
Parameter
Definition
COMMUNICATIONS STATION ADDRESS—This is
a number that is assigned to a controller that is to be
used with the communications option. This number
will be its address. This value is also used for IR
transactions. To communicate with Pocket PC set
address to 3.
COMMUNICATIONS SELECTION—enables the
RS-485 or Ethernet communications port.
DISABLE—Disables communications option.
MODBUS—Enables RS-485 Modbus RTU
communication port. Appears only when a
communications board is installed.
ETHERNET—Enables Ethernet communications
port. Appears only when a communication board is
installed.
ATTENTION The PIE Tool will not be able to
communicate via this port if it is disabled.
Factory
Setting
98.0
90.0
0.5
9/06