Receive Buffer Status Storage Area; Predefined Protocol Support Function Check Area; Predefined Protocol Setting Data Check Area; Number Of Registered Predefined Protocols - Mitsubishi Electric MELSEC iQ-RJ71EN71 User Manual

Receive buffer status storage area

■State of receive buffer (Un\G1900030)
Address
Un\G1900030

Predefined protocol support function check area

■Predefined protocol ready (Un\G1901002)
Address
Un\G1901002

Predefined protocol setting data check area

■Predefined protocol setting data error information (Un\G1901020 to Un\G1901023)
Address
Un\G1901020
Un\G1901021
Un\G1901022
Un\G1901023
*1 The setting value may be unidentifiable (65535) in the following cases.
 When a setting that cannot be detected by the current Ethernet-equipped module version is written in
 When protocol setting data is broken (hardware failure)
■Number of registered predefined protocols (Un\G1901024)
Address
Un\G1901024
APPX
368
Appendix 3 Buffer Memory
Description
Stores the receive buffer status.
0: Receive buffer not full
1: Receive buffer full
Description
Stores the ready status of the protocol setting data.
0: 
1: Ready
Name
Protocol number
Setting type
Packet number
Element number
Description
Stores the protocol number of the registered protocol setting data.
0 is stored if the protocol setting data check result is abnormal.
0: No registration
1 to 128: Number of registrations
Description
When a protocol setting data error is detected, stores the
protocol number where the error was detected.
Protocol is checked in order from smallest protocol number.
The protocol number where an error was detected first is
stored.
0: No error
1 to 128: Protocol number
*1
65535: Cannot identify
0 is stored if an error is detected in the packet setting or
element setting.
1 is stored if an error is detected in the protocol detailed
setting. (Valid when protocol number value is 1 to 128)
0: Packet setting or element setting
1: Protocol preferences
*1
65535: Cannot identify
When an error is detected in the protocol setting data,
stores the packet number that detected the error.
The packets are checked in order of send packets and then
receive packets (expected packets) from smallest number.
The packet number where an error was detected first is
stored. (Valid when setting type value is 0)
0: Send packet
1 to 16: Receive packet number
*1
65535: Cannot identify
When an error is detected in the protocol setting data,
stores the element number where the error was detected.
The elements are checked in order of smallest element
number. The element number where an error was detected
first is stored. (Valid when setting type value is 0)
1 to 32: Element number
*1
65535: Cannot identify