Emerson Rosemount OCX 8800, Instruction Manual

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Section 7: Foundation
Fieldbus
April 2017
Instruction Manual
IM-106-880C, OI
94
Device
Addressing
7.5.2 Device Addressing
Fieldbus uses addresses between 0 and 255. Addresses 0 through 15 are reserved for group
addressing and for use by the data link layer. For all EMERSON Fieldbus devices addresses 20
through 35 are available to the device. If there are two or more devices with the same address,
the first device to start will use its programmed address. Each of the other devices will be given
one of four temporary addresses between 248 and 251. If a temporary address is not available,
the device will be unavailable until a temporary address becomes available.
7.6 OCX Function Blocks
7.6.1 Implemented Function Blocks
Shows the OCX Implemented Function Blocks.
Table 7-1 OCX Implemented Function Blocks
Resource Block
Transducer Block
Analog Input Block 1 (AI1) See TB Channel Assignment
Table 7-17
Analog Input Block 2 (AI2) See TB Channel Assignment
Table 7-17
Analog Input Block 3 (AI3) See TB Channel Assigbment
Table 7-17
Analog Input Block 4 (AI4) See TB Channel Assignment
Table 7-17
PID Block (PID) Proportional/Integral/Derivative of any AI-BLOCK
Arithmetic Block (ARTHM) Arihmetic Function Block
Input Selector Block (ISEL) Input Selector Function Block
Function Block Description