Model 3095FB Multivariable Transmitter with Modbus Protocol
Modbus Protocol Guide
Page 46 of 79
6.1.1 Calibration Flag
A Modbus coil has been provided as a way of flagging the transmitter as being in a Calibra-
tion state. This coil is used only for informational use and does not affect the internal opera-
tion of the 3095FB. The host has complete control of the Calibration Flag. When the
Calibration Flag is set, the corresponding status bit will turn ON.
It is recommended that this flag be turned on at the start of calibration, and then turned off
when the calibration is complete. The Calibration Flag is useful if for some reason the per-
son performing a calibration on the 3095FB gets called away in the middle of the calibra-
tion. The 3095FB may be in an unknown state, such as vented to atmosphere. If the
Calibration Flag is set, the host that is polling the 3095FB will be able to see the Calibration
status bit and mark the incoming data as unreliable.
0449,
0450
FP register
R/W, WP
PT calibra-
tion
PT offset (zero)
0451,
0452
FP register
R/W, WP
PT slope (span)
*Attributes: R/W = Read/Write, RO = Read Only, WP = Write Protected
**These registers are available at multiple Modbus addresses (see Section 2.3 located in
the
Modbus Protocol Guide
)
Table 6-2 Calibration Flag
Modbus Access
DESCRIPTION
Address
Address
Type
Attributes
Functional
Area
Data / Control
0003
Coil
R/W, WP
Calibration
Calibration Flag
*Attributes: R/W = Read/Write, RO = Read Only, WP = Write Protected
**These registers are available at multiple Modbus addresses (see Section 2.3 located in
the
Modbus Protocol Guide
)
Table 6-1 Calibration
Modbus Access
DESCRIPTION
Address
Address
Type
Attributes
Functional
Area
Data / Control
Содержание 3095FB
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