Flowserve 400MD Logix - Manual (Page 44)

Index Origin Name Store Date Type Default Value
78 MFG FRICTION_LOW_PERCENT_YELLOW NR Simple FLOATING_POINT 0
79 MFG PRESSURE_DIFFERENTIAL R Simple FLOATING_POINT 0
80 MFG MD_BLOCK_TEST R Array UNSIGNED8 0,0,0,0,0,0,0,0
81 MFG EXEC_DELAY SRW Simple UNSIGNED16 0
82 MFG FRICTION_UNITS RW Simple UNSIGNED8 0
83 MFG TREND_DATA_1 R Array INTEGER16 All 0
84 MFG TREND_DATA_2 R Array INTEGER16 All 0
85 MFG TREND_DATA_3 R Array INTEGER16 All 0
86 MFG TREND_DATA_4 R Array INTEGER16 All 0
87 MFG TREND_DATA_5 R Array INTEGER16 All 0
88 MFG TREND_DATA_6 R Array INTEGER16 All 0
89 MFG TREND_DATA_7 R Array INTEGER16 All 0
90 MFG TREND_DATA_8 R Array INTEGER16 All 0
91 MFG TREND_DATA_9 R Array INTEGER16 All 0
8.8 Analog Output Function Block
AO Block Description
The Analog Output function block serves as the external interface for the transducer function block. The value of SP is used to produce the OUT
value which is then sent to the transducer block to specify the valve position. PV reflects the actual valve position reported by the transducer
block.
The AO function block operates on the output value from a control block [such as PID] and performs the following primary functions (most
can be user configured):
Set-point source selection limiting
• Units conversion
• Fault state action
• Position read back
• Alarming
• Mode control
• Output calculation
The database contains the standard AO block database, as defined in the FF FBAP specifications. Flowserve product extensions are specified
in the Logix 3400MD digital positioner parameter dictionary and are described below.
The interface to the AO block contains the following:
• Execute function block
• Database read access
• Alarm acknowledgment
• Database write access
AO Block Connections
CAS_IN is the only linkable input parameter and is used with a PID function block for direct cascade connection. RCAS_IN is a contained input
parameter used for remote cascade connection.
OUT and BKCAL_OUT are linkable output parameters. RCAS_OUT is a contained output parameter for remote cascade connection.
Logix 3400MD Digital Positioner LGENIM3405-02 11/13
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