Siemens SIMATIC TI505 Guía de usuario descargar pdf (Pagina 29)

Simatic/TI 505 Ethernet Driver Help

12/13

E 4/5,

11/12

1=Wait. This bit is set during a soak period when the PV is not within a specified

deviation from the SP. The loop holds the soak timer when bit 5 is set.

F 5/6,

10/11

1=Hold in progress at current step

G 6/7,

9/10

Unused (always returned as 0)

H 7/8,

8/9

Unused (always returned as 0)

I 8/9,

7/8

Ramp/soak step number currently executing

J 9/10,

6/7

Ramp/soak step number currently executing

K 10/11,

5/6

Ramp/soak step number currently executing

L 11/12,

4/5

Ramp/soak step number currently executing

M 12/13,

3/4

Ramp/soak step number currently executing

N 13/14,

2/3

Ramp/soak step number currently executing

O 14/15,

1/2

Ramp/soak step number currently executing

P 15/16,

0/1

Ramp/soak step number currently executing

Find Forced Addressing

Each address type only allows the one data type stated. No address type has a range.

Address Type Format Range Data Types Access

Find Forced Discrete Starting at X address FFX N/A String Read Only

Find Forced Discrete Starting at Y address FFY N/A String Read Only

Find Forced Discrete Starting at C address FFC N/A String Read Only

Find Forced Word Starting at WX address FFWX N/A String Read Only

Find Forced Word Starting at WY address FFWY N/A String Read Only

Find Forced Discrete / Word Starting address FFSTART N/A DWord Read/Write

Note 1: FFSTART is a driver internal tag (one per device) that is initialized to 1 on server startup. It has a write

range of 1->65536 and a write of values outside of this range will fail with an error message.

Note 2: If the starting address value in FFSTART is greater than the range for the Find Forced type issued, then

the read will fail with an "Address out of Range" error (Task Code error '02') and the quality of the tag will be set

to "Bad". For example, if FFSTART was set to a value of 65536 and a read of "FFC" was issued, the error generated

would look similar to the following due to C memory in the PLC only being configured for maximum value of

32768: "Device 'Channel1.Device1' detected a Task Code error '02' (Tag 'ffc', Size '256')."

Usage

1. Perform a write to FFSTART with the value of the starting address to be used for the Find Forced type in

Step 2.

Caution: Make sure that the value written is within the configured range for the type.

2. Perform a read using the Find Forced type selected. The read issues a command to the PLC asking it to

perform a search for any Forced discretes (C, X/Y) or words (WX/WY).

Find Forced Search Algorithm

Using the specific address provided, the first forced address beginning with or following the starting address is

output. The search will continue until it completes. A search is completed by one of the following: (1) the search

proceeds through all locations in a circular manner and arrives back at the specified starting address or (2)

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