Data Validation; Wx4 = Reports Selected Channel Value; Download Table For Wx4 - Siemens SIMATIC 505 User & Programmers Manual

PLC Input Words: Module Data
2.3.4

Data Validation

2.3.5
WX4 = Reports
Selected Channel
Value
2-8 Software Interface
PLC (continued)
The module validates the following data from normal I/O and the upload
table within certain limits before a cycle starts; an error code is returned to
WX3 if any discrepancy is found (see section 2.3.3 for bit codes).
There is an illegal V-memory pointer in WY5 or WY6. For example:
— WY5 = 1 and WY6 = 100 indicates pointer overlap.
— WY5 = 0 indicates pointer out of bounds (pointer < 1).
— WY6 = 39789 indicates pointer out of bounds (pointer
There is a profile data error in clamp closing, injection, or pack and hold
profiles because values are not in decreasing order or value
There is a profile data error in plasticate or clamp opening profiles
because values are not in increasing order or value
WX4 reports the selected channel value to allow faster updates to the PLC.
Download table location 256 selects the channel that WX4 reports. Valid
values in download table location 256 are 1 through 9. The default value is 3
(See Table 2-4).
Table 2-4 Download Table for WX4
Location
Channel number (valid: 1, 2, 3, 4, 5, 6, 7, 8, 9; any other
256
value = 3)
32767).
32767.
Description
32767.