Process Data Overlaid By Mailbox; Figure 16: Partial Overlay Of Process Data By The Mailbox - Pii - WAGO I/O-SYSTEM 750 Manual

58 Process Image
A detailed description of all Mailbox commands is available in the appendix.
6.3.2

Process Data Overlaid by Mailbox

If the Mailbox is mapped, it overlays part of the process data based on its
configured size. In "Ad-hoc Communication" and "Real-Time Communication"
modes, other process data may not be valid. Such is the case when the process
data of a slot is partially covered by Mailbox data.
While the Mailbox is mapped, the data of a partially overlaid slot is not updated in
the PII even if the remote device assigned to this slot sends new data.
Figure 16: Partial overlay of process data by the Mailbox – PII
Likewise, the local 750-644 I/O module does not transmit the remaining data in
the PIO of an entirely or partially overlaid slot to the remote 750-644 I/O module.
WAGO-I/O-SYSTEM 750
750-644 Bluetooth
Version 2.0.0, valid from FW/HW Version 03/03
®
RF-Transceiver
Manual