Flowserve MX/QX Profibus DP/PA Field Unit Instrukcja Użytkownika Pobierz pdf (Strona 69)

PB DPV1 / PA Field Unit Installation and Maintenance FCD LMENIM2336-03 – 12/12

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Channel 357 – Actuator Position Channel (Index 117)

The valve position is in units of 0-100% of open.

Channel 358 – Analog Input 1 (Index 118)

The 4-20 mA user input is reported in units of 0-100%.

Channel 359 – Analog Input 2 (Index 119)

The 4-20 mA user input is reported in units of 0-100%.

PROFIBUS Function Block Cyclic Parameter Descriptions

The MX/QX PB device contains eight “slots.” Each slot contains a speciﬁc block type. The host can

conﬁgure which parameter in each of these blocks are used for cyclic data. Below are the slots and

their associated block type with the default channel number for that block.

The module type for each slot is ﬁxed, i.e., Slot 1 can only contain an Analog Output.

Slot Number Slot Assignment Factory Default Value Channel Number

Slot 1 Analog Output AO_CTRL_FLOW_CHAN 344

Slot 2 Discrete Input DI_POSITION_AND_BUS_MODE 347

Slot 3 Discrete Input DI_ACTUATOR_FUALTS_1_CHAN 349

Slot 4 Discrete Input DI_ACTUATOR_FUALTS_2_CHAN 350

Slot 5 Discrete Input DI_ACTUATOR_ALARMS_CHAN 351

Slot 6 Discrete Output DO_POSITION_CHAN 354

Slot 7 Discrete Output DO_ESD_CHAN 355

Slot 8 Analog Input AI_POSITION_CHAN 357

NOTE: Any slot may be replaced with a “place holder” (EMPTY_MODULE) if no cyclic data from this

block is desired.

Accessing the Cyclic Data at Runtime

The cyclic data that can be read or written by a host must be done using “consistency”, that is, the

data must be transferred in a ﬁxed order. Refer to your host software manuals for proper consistent

data transfer techniques.

Data Types

Structure Type Deﬁnition

Floating Point (DS-33) Consists of four bytes of value data and one byte of status data.

Discrete (DS-34) Consists of one byte of value data and one byte of status data.

NOTE: The CHECKBACK parameters contain three bytes that are bitwise coded.

1 2 ... 64 65 66 67 68 69 70 71 72 73 74 ... 87 88

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Flowserve MX/QX Profibus DP/PA Field Unit Instrukcja Użytkownika Strona 69