Process Image (Pi); Determining The Size Of A Slot For Data Transfer In The Master Pi - WAGO I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
®
750-644 Bluetooth RF-Transceiver
Response
Byte
0
1
2
3
4
5
6
7
8
9
10
Return value
Pos : 104.4 /Serie 750 ( WAGO-I/O-SYST EM)/AnhangReferenz-M ailbox-Befehl e_Prozess abbil d_750- 644_ÜohneC ode @ 17\mod_1386255631272_21.doc x @ 139592 @ 344 @ 1
12.3.4

Process Image (PI)

12.3.4.1

Determining the Size of a Slot for Data Transfer in the Master PI

SetRemotePiSize, 0x32
This command is used to limit the process image (PI) of a remote 750-644 I/O
module within the master PI to n bytes. All slave process images in the master
together must not be larger than the set master PI -2. Two bytes of the total size
are necessary for the control/status byte and an internal byte (null byte). The size
of the master process image can be queried and configured over the parameter
channel. It is contained in the LSB by parameter 0.
By downsizing the available PI, the sum of the configured cut-offs may exceed
the size of the master PI. In this case, the output configuration is already invalid.
In such a case, the configuration is executed, but the error value
MBX_CMD_INVALID_CONFIGURATION is displayed. If the output
configuration is correct, a command that leads to an invalid configuration is
acknowledged and rejected with an error.
For ad-hoc slots 8 ... 12, the cut-off must be at least 2 and may not exceed 16.
Only effective when changed to the master role
The process image mapping can also be configured in the slave role, but only
takes effect when changed to the master role.
Conditions
Mailbox size
6
●
Manual
Version 2.0.0, valid from FW/HW Version 03/03
7 6
2 2
T
Parameters
-
12 18 Config. Real-time Ad-hoc Master Slave
● ● ●
5 4 3
2 2 2
MBX_GETBBFWVERSION
MBX_RESULT
Fw_Status
Fw_HCI_Version
Fw_HCI_Revision (High)
Fw_HCI_Revision (Low)
Fw_LMP_Version
Fw_Manufacturer_Name (High)
Fw_Manufacturer_Name (Low)
Fw_LMP_Subversion (High)
Fw_LMP_Subversion (Low)
Value
-
Mode Device role
- -
Appendix
2 1
2 2
Description
-
Save
config.
● ● ●
147
0
2
Reboot
-