Result Values Of Mailbox Commands; Example Of Mailbox Use - WAGO -I/O-SYSTEM 750 Series Manual

2.1.1.8.2

Result values of mailbox commands

Result
OK
HI_NG
HI_OPCODE
HI_LENGTH
HI_ACCESS
EC_NG
EC_SND
EC_SD0
EC_SD2
EC_DE
EC_SE
EC_AT
EC_ET
EC_RE
HI
EC
2.1.1.8.3

Example of mailbox use

The command for reading-in the four 16-bit channels of an AS-Interface input
slave, which is set up according to slave profile 7.3, is shown by way of an
example (RD_7X_IN).
When processing process image:
Mailbox size: 6 bytes
WAGO-I/O-SYSTEM 750
I/O Modules
Value Location
0x00 –
0x11 HI
0x12 HI
0x13 HI
0x14 HI
0x21 EC
0x22 EC
0x23 EC
0x24 EC
0x25 EC
0x26 EC
0x27 EC
0x28 EC
0x29 EC
Host Interface of the module
Execution Control (part specific to AS-Interface)
750-655 [AS-Interface master module]
Mailbox commands
Meaning
Fault-free execution
General fault (host interface "not good")
Invalid value in opcode
Length of mailbox in I/O data range or length of the
DP V1 request is too small
No access right
General fault (AS-I execution control "not good")
"Slave (source addr) not detected"
"Slave 0 detected"
"Slave (target addr) not detected"
"Delete error"
"Set error"
"Address temporary"
"Extended ID1 temporary"
"Read (extended ID1) error"
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