Delta RMC101 Uživatelský manuál stáhnout pdf (Strana 333)

100

101

Ethernet 5.2

Communications 5-83

specify a register holding the value to put on the stack. For the most part these additional

methods are not described in this manual but can be found in the DL205 PLC User Manual and

DL405 PLC User Manual.

Note: Recall that DirectLogic V-memory addresses are given in octal. Refer to the DL205/405

PLC User Manual for a description of octal.

Here is a description of the values placed on the stack:

Value

Description

First

(LD)

This 16-bit BCD value is divided into three fields.

The first digit indicates the base number. In most cases this must

be 0 to indicate the CPU base.

The second digit indicates the ECOM slot number. Slots start with

0 for the first slot to the right of the CPU and increase by one for

each slot to the right.

The last two digits indicate the Module ID of the remote device.

Enter the RMC's Module ID here.

Second

(LD)

This 16-bit BCD value indicates the number of bytes to read or

write. For RMC registers, this value must be an even number

between 2 and 128, which represent 1 to 64 words.

Third

(LDA)

This indicates the location in the local PLC to read the data into,

and write data out from. The address is a V-memory address,

even though the prefix is O (for octal) instead of V for V-memory.

Fourth

(RX or

WX)

The parameter on the RX or WX instruction indicates the location

in the remote PLC (the RMC in our case). See RMC Register

Map (Automationdirect.com) for a map of addresses.

Notice that V0-V177 and V1000-V1177 may be displayed as

TA0-TA177 and CTA0-CTA177, which are called aliases.

You can disable displaying aliases by selecting the View menu in

DirectSOFT32, Options menu item, Global tab, and clearing the

Display Aliases checkbox.

Example 1

The user has an ECOM in slot 1 of the CPU base and an RMC with Module ID 5. The user wants

to read all ten status words for each of the first two axes of the RMC and store those twenty

words into V2000-V2023. This is done as follows:

1 2 ... 328 329 330 331 332 333 334 335 336 337 338 ... 950 951

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