Setting Failsafe Direction And Write Protect Jumpers; Table 4: Ac Termination And Write Protect Jumpers For Modbus - Honeywell SMV800 Quick Start Installation Manual

SET JUMPERS FOR HART/DE

Setting failsafe direction and write protect jumpers

The SmartLine Multivariable transmitter (DE or HART) provides two jumpers to
set the desired failsafe action and write protect option. See
The top jumper on the electronics module sets the failsafe direction. The
default setting is up-scale failsafe.
Upscale drives the loop to a value greater than 21mA while down scale drives
the loop to a value less than 3.8mA.
You can change the failsafe direction by moving the failsafe jumper (top jumper)
to the desired position (UP or DOWN).
The bottom jumper sets the write protect.
The default setting is OFF (Un-protected).
When set to the ON (Protected) position, changed configuration parameters
cannot be written to the transmitter.
When set to the OFF (Un-protected) position, changed configuration
parameters can be written to the transmitter.
ATTENTION: Electrostatic Discharge (ESD) hazards. Observe
precautions for handling electrostatic sensitive devices.
Step
1 Turn OFF transmitter power.
2 Loosen the end-cap lock, and unscrew the end cap from the
electronics side of the transmitter housing.
3 If applicable, carefully depress the tabs on the sides of the
display module and pull it off.
If necessary, move the interface connector from the
communication module to the display module to provide the
preferred orientation of the display module in the window.
4
Set the failsafe jumper (top jumper) to the desired action (UP or
DOWN). And the write protect jumper (Bottom jumper) to the
desired behavior (Protected or Unprotected) See
jumper positioning.
5 Screw on the end cap and tighten the end-cap lock.
6 Turn ON transmitter power.
Set of Jumpers for Modbus
The SmartLine Multivariable Modbus transmitter provides two jumpers to set
the desired AC Termination setting and write protect option. See
ATTENTION: Electrostatic Discharge (ESD) hazards. Observe
precautions for handling electrostatic sensitive devices
Step
1 Turn OFF transmitter power.
2 Loosen the end-cap lock, and unscrew the end cap from the
electronics side of the transmitter housing.
3 If applicable, carefully depress the tabs on the sides of the
display module and pull it off.
If necessary, move the interface connector from the
communication module to the display module to provide the
preferred orientation of the display module in the window.
4 Set the AC Termination jumper to the desired action and the
write protect jumper to the desired behavior (See
jumper positioning.
5 Screw on the end cap and tighten the end-cap lock.
6 Turn ON transmitter power.
Figure 15: Loading AC termination enable and write protect jumper for
Modbus (RS-485)
Figure 13.
Action
Figure 14 for
Figure 15.
Action
Figure 15 for
Figure 13: Jumper location HART
Jumper
Settings
Failsafe = UP (High)
Write Protect = OFF (Not Protected)
Failsafe = DOWN (Low)
Write Protect = OFF (Not Protected)
Failsafe = UP (High)
Write Protect = ON (Protected)
Failsafe = DOWN (Low)
Write Protect = ON (Protected)
Figure 14: Jumper settings HART

Table 4: AC Termination and Write Protect Jumpers for Modbus

Jumper Arrangements
Description
Description
AC termination = OFF
(Disabled)
Write Protect = OFF (Not
Protected)
AC termination = ON
(Enabled)
Write Protect = OFF (Not
Protected)
AC termination = ON
(Enabled)
Write Protect = ON
(Protected)
AC termination = OFF
(Disabled)
Write Protect = ON
(Protected)