User manual

Toolbox 32 User Manual 1.47d www.cse-semaphore.com/mykingfisher

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Ladder Logic - Tx/Rx Update Network RTU Images

Care must be taken to initiate only one Tx or Rx Update block at a time otherwise unpredictable results may

occur. The pending flags detailed below can be used to determine when the block has finished before

generating new Tx or Rx update messages.

Series 2: Tx Update Network RTU Images

Sends new network data to a destination RTU. It is possible to update the network data for up to 32 RTUs

using one TX Images block. Network data is stored in an RTU as blocks of 64 registers. The TX Images

block works by requesting the CRC for each block from the destination RTU (RTU #) and if the CRCs are

different, the local RTU updates the block in the destination RTU. Only network blocks that are different are

updated which minimises communication time. Requires driver TXUPDATE.Dxx. As used in the appendix

topic Redundancy, Redundant RTUs.

Comment: A 12-character description.

RTU #: (1-249) The destination RTU that the network data is sent to.

RTUs: (1-249) The network data for these RTUs is compared between the destination RTU and the local

RTU and then the data in the destination RTU is updated if necessary.

Series 2: Rx Update Network RTU Images

The RX Images block is used to get new network data from a source RTU. It is possible to update the

network data blocks of up to 16 RTUs at a time using one RX Images block. An RX Images block works by

requesting the CRCs for each network block from the source RTU. If the CRCs are different to the local RTU,

the local RTU polls the new network blocks from the source RTU. Only network blocks that are different are

updated which minimises communication time. Requires driver RXUPDxx.Dxx.

Comment: A 12-character description.

RTU: (1-249) The source RTU to receive network data from.

RTUs to update: (1-249) The network data blocks (images) of these RTUs are requested from the source

RTU. The network data for up to 16 RTUs can be requested at once.

Selection and Status Controls

These fields control the RTU images to update and indicate the current status of the block.

Realtime Data Mask: Local register (#R), ALL (all RTUs in the list are updated), or NONE (none of the

RTUs in the list are updated). When a local register is used, the 16 register channels correspond to the 16

RTUs to update respectively. When a channel is set ON, the data for the corresponding RTU will be

updated. After a successful data update, the channels are not reset. The default value for this field is ALL.

Pending flags: NONE or a local register (#R). Each of the 16 channels indicates the pending status of the

corresponding RTU in the RTUs to update list. All the channels are set ON when the RX Images block is

activated. After the network data for each RTU is updated, the channel corresponding to that RTU is set

OFF.

Status flags: NONE or a local register (#R). Each of the 16 channels indicates the success/failure status of

the corresponding RTU in the RTUs to update list. Each flag is written to after the network data of that

particular RTU has been updated. A flag is set OFF if the update is completed successfully or is set ON if the

update has failed.