Материал: m083700e

CANopen • 161

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5.3.4.3.8 Object 0x2700, 3 Byte Special Modules, Outputs

5.3.4.3.11 Object 0x3000, 5 Byte Special Modules, Inputs

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5.3.4.3.15 Object 0x3400, 7 Byte Special Modules, Inputs

One Status Byte is mapped for each module. It is in the first place of the mailbox, afterwards an empty byte and then the actual mailbox box data follow.

Example:

1 byte Status, 6 bytes mailbox, 4 bytes data

Data in the input process image

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CANopen • 163

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5.3.4.3.20Object 0x4300-0x4302, Gateway Module Output

One Control Byte is mapped for each module. It is in the first place of the mailbox, afterwards an empty byte and then the actual mailbox box data follow.

Example:

1 byte Control, 6 bytes mailbox, 4 bytes data

Data in the output process image

5.3.4.3.21Object 0x4500, Spacer Module Configuration

With the help of this object it is possible to insert virtual modules into the node. In this manner, for instance, a max. node extension can be projected and a new node subsequently designed which represents a sub-quantity in relation to the maximum configuration. The behavior of this new node with regard to its object entries in relation to connected modules is identical to that of the maximum configuration. As such, other applications (CANopen master,...) can be designed once for the maximum configuration and have access to any subquantity without having to change its setting.

In the same manner it is possible to provide for future extensions from the start of the design process and making later adaptation of the mapping will be unnecessary.

•Sub-Index 0

Sub-index 0 = 0: Mapping of virtual modules not active Sub-index 0 ≠ 0 Mapping in of virtual modules active

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The entry indicates the number of the connected modules in the maximum configuration.

When changing the value from 0 to >0, the configuration is created as described from sub-index 1. During the creation of a new configuration, all previously configuration settings that have not been permanently stored, will be written over and the process image reset. For this reason, always configure index 0x4500 first, followed by all other settings (mapping, sync time,...).

Setting the sub-index 0 is only possible in the Pre-Operational status.

If the creation of a new configuration is free from errors, an Emergency is sent with the parameters PP=LL=SS=0.

If an error occurs during the creation of a new configuration (i.e. the number of connected modules exceeds that of the modules configured), a corresponding Emergency is transmitted. The coupler starts with the default configuration in accordance with the modules connected, and changes to the STOP status.

•Emergency Message: Error Code 0x5000 Error Register 0x81

•Additional Code 00 03 PP LL SS

PP: indicates the physical module slot, where the error has occurred LL: indicates the logic slot (slot in the maximum configuration) of the module, where the error has occurred

SS: Cause of the error

Emergency structure under a faulty creation of a configuration

Parameter: SS (cause of the error)

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Note

Should module diagnostic messages occur by means of an Emergency message, the display of the module position always refers to the logic module position in the node. Consequently these messages are always identical, irrespective of the node configuration.

• Sub-Index 1..64

Sub-index 1..64 contains the configuration of the node in its maximum configuration. Each index stands for a connected module (sub-index.1 1st module, sub-index.2 2nd module,...). These indexes describe the corresponding module in detail.

Design of Sub-Index:

*1) The input and the output bit can be set simultaneously (i.e. digital output module with diagnostics, this module has input and output bits)

WAGO-I/O-SYSTEM 750

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