Updated EPL Network Flags and Parameters

Operating System

Features Added

ACR90xx 1.28/IEC96xx 2.28

P37378-37383

Bit 2-3,18-19

Bit16640--Bit16660 EPL Network Flags

Code-0xD2; Index=0x00

P4616

EPL Network Control Parameters

Bit Index

Bit Number

Start Network

0

16640

Reset Network

1

16641

SDO Send Request

2

16642

SDO Read Request

3

16643

Reserved

4-7

16644-16647

EPL Controller Installed

8

16648

Network Operational

9

16649

Network Start Failed

10

16650

EPL Node Failure

11

16651

EPLD Stream Open

12

16652

EPLD Stream Disconnected

13

16653

EPL Drive(s) Enabled

14

16654

Insufficient Period

15

16655

Starting Network

16

16656

Resetting Network

17

16657

Writing SDO Data

18

16658

Reading SDO Data

19

16659

Opening EPLD Stream

20

16660

Field Description

Read/Write

Description

Start Network

R/W

Set the bit to start the EPL network. The Managing Node (MN) places the Controlled Nodes (CN) into a pre-operational state, configures the CNs, then places the CNs into an operational state. The bit is self-clearing.

Reset Network

R/W

Set the bit to reset the EPL network to a non-operational state. The bit is self-clearing.

SDO Send Request

R/W

Setting the bit sends SDO data specified in P37378-37381. The bit is self-clearing.

SDO Read Request

R/W

Setting the bit reads SDO data specified in P37378-37381. The bit is self-clearing.

EPL Controller Installed

R

EPL controller card has been detected.

Network Operational

R

The EPL controller is exchanging data with the drives.

Network Start Failed

R

An attempt to start the network using bit 16640 has failed. To determine why the attempt failed, look at P37384-P37386.

EPL Node Failure

R

An individual EPL node has failed. To determine which node failed, look at P37385

EPLD Stream Open

R

An EPLD stream is open (using the OPEN command). To determine which EPL drive is communicating, and its device number, look at P37387 and P37388

EPLD Stream Disconnected

R

Set when an unexpected disconnection with an EPL drive occurs. The controller automatically closes the EPL communication stream.
The bit remains set until the user clears it, or another OPEN EPLD command is sent to the same drive to reestablish communication.

EPL Drive(s) Enabled

R

The controller will not allow the network to be started or reset if any of the EPL drives are enabled.

Insufficient Period

R

Set when the period is too low. Network will not start.

Starting Network

R

Indicates that a network start is underway.

Resetting Network

R

Indicates that a network reset is underway.

Writing SDO Data

R

Indicates that a SDO write is in process.

Reading SDO Data

R

Indicates that a SDO read is in process.

Opening EPLD Stream

R

Indicates that the process of opening an EPLD stream is underway.

P37376 - P37391 EPL Network Parameters 

Code-0xD2; Index=0x00

EPL Network Control Parameters

Data Type 

P

Number of controlled nodes (CN)

Long

37376

Reserved

Long

37377

Node ID for SDO transfer

Long

37378

Index # for SDO transfer

Long

37379

Sub-index # for SDO transfer

Long

37380

Type of data for/from SDO transfer

Long

37381

Expected length (bytes) of transfer

Long

37382

Actual length (bytes) of completed transfer

Long

37383

Field Description

Read/Write

Description

Number of Controlled Nodes (CN)

R/W

Sets the number EPL drives (called controlled nodes) in the network. Saved via ESAVE command

Node ID for SDO transfer

R/W

Specifies the Node ID of the device targeted for subsequent SDO transfers

Index # for SDO transfer

R/W

Index number of the Object Dictionary entry to be read/written. Must be integer value

Sub-index # for SDO transfer

R/W

Sub-Index number of the Object Dictionary entry to be read/written. Must be integer value

Type of data for/from SDO transfer

R/W

EPL DataType of Object to be transferred
1 : Boolean  (1 byte)
2 : 8 bit intetger (1 byte)
3 : 16 bit integer ( 2 bytes)
4 : 32 bit integer (4 bytes)
5 : 8 bit unsigned (1 byte)
6 : 16 bit unsigned ( 2 bytes)
7 : 32 bit unsigned (4 bytes)
8 : Float (4 bytes)
9 : String (Visible or Octet, variable length)

Expected length (bytes) of transfer

R/W

For string data types only, parameter indicates expected length in bytes of the data to be transferred

Actual length (bytes) of completed transfer

R

Number of bytes exchanged in last SDO transfer