Inside documentations Quantum EIO Control Network Installation and Configuration Guide, Quantum EIO Distributed IO Network Installation and Configuration Guide and Quantum EIO Remote IO Modules Installation and Configuration Guide, and for the the following modules via the Modbus function code 3 it is possible to access to a variety of diagnostic functions, including basic network diagnostics, Ethernet port diagnostics, and Modbus port 502 diagnostics.

Unfortunately the meaning to some words value are not explained, below is provided the meaning to words when this is necessary.

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Basic Network Diagnostic

40001 - 40002 Basic Network Diagnostic Validity
The Basic Network Diagnostic Validity bytes indicate which fields in the Basic Network
Diagnostic Data structure are valid.

Bit	Field	Description
31	Field Extended (FE)	0 = NOT Extended
30 - 18	Reserved	0
17	Communication Global Status (CGS)	0 = NOT Valid, 1 = Valid
16	Supported Communication Services (CS)	0 = NOT Valid, 1 = Valid
15	Field Extended (FE)	1 = Extented
14	Status of Communication Services (CSS)	0 = NOT Valid, 1 = Valid
13	IP Address (IP)	0 = NOT Valid, 1 = Valid
12	Subnet Mask (SM)	0 = NOT Valid, 1 = Valid
11	Default Gateway (GIP)	0 = NOT Valid, 1 = Valid
10	MAC Address (MAC)	0 = NOT Valid, 1 = Valid
9	Ether Frame Format Capability / Configuration / Operational (EFF)	0 = NOT Valid, 1 = Valid
8	Ether Rcv Frames OK (ER)	0 = NOT Valid, 1 = Valid
7	Ether Xmit Frames OK (EX)	0 = NOT Valid, 1 = Valid
6	Num MB Open Client Connections (NOC)	0 = NOT Valid, 1 = Valid
5	Num MB Open Server Connections (NOS)	0 = NOT Valid, 1 = Valid
4	Num MB Error Msgs Sent (MBE)	0 = NOT Valid, 1 = Valid
3	Num MB Msgs Sent (MBS)	0 = NOT Valid, 1 = Valid
2	Num MB Msgs Rcvd (MBR)	0 = NOT Valid, 1 = Valid
1	Device Name (FDN)	0 = NOT Valid, 1 = Valid
0	IP Assignment Mode Capability / Operational (IAO)	0 = NOT Valid, 1 = Valid

40003 Communication Global Status

Bit	Field	Description
15 - 2	Reserved	0
1 - 0	Global Status (GS)	Device status. 0 = Reserved, 1 = Not ok, 2 = ok, 3 = Reserved

40004 Supported communication services

Bit	Field	Description
15 - 1	Reserved	0
0	Port502Messaging (502)	0 = Not Supported, 1 = Supported

40005 Status of communication services

Bit	Field	Description
15 - 3	Reserved	0
2 - 0	Port502Messaging (502)	001 IDLE - 010 Operational

Ethernet Internal Port Diagnostic Data

40040 Port Diagnostic Data validity bytes indicate which Ethernet Internal Port Diagnostic Data values are valid. Depending to the device all these fields are present or not.

Bit	Field	Description
15	Field Extended (FE)	0 = NOT Extended
14,11	Reserved	0
10	Logical/Physical Port Number (PN)	0 = NOT Valid, 1 = Valid
9	Ether Control Capability (ECC)	0 = NOT Valid, 1 = Valid
8	Link Speed Capability (LSAC)	0 = NOT Valid, 1 = Valid
7	Ether Control Configuration (ECG)	0 = NOT Valid, 1 = Valid
6	Link Speed Configuration (LSC)	0 = NOT Valid, 1 = Valid
5	Ether Control Operational (ECO)	0 = NOT Valid, 1 = Valid
4	Link Speed Operational (LSO)	0 = NOT Valid, 1 = Valid
3	Port MAC Address (PMA)	0 = NOT Valid, 1 = Valid
2	Media Counters (MC)	0 = NOT Valid, 1 = Valid
1	Interface Label (IL)	0 = NOT Valid, 1 = Valid
0	Interface Counters (IC)	0 = NOT Valid, 1 = Valid

40041 Logical/Physical Port Number

Bit	Field	Description
15 - 8	Logical Port Number	Values are: 0x01 to 0xFE
7 - 0	Physical Port Number	Values are: 0x01 to 0xFE

40042 Ethernet control capability

Bit	Field	Description
15 - 14	Reserved	0
13	Link	0 = Not Supported; 1 = Supported
12 - 5	Reserved	0
4 - 3	Duplex (DP)	0 = None, 01 = Half-Duplex 10 = Full-Duplex, 11 = Auto-Negociate
2	Reserved	0
1	Fiber Media Supported	0 = Not Supported, 1 = Supported
0	Twisted pair Supported	0 = Not Supported, 1 = Supported

40043 Link Speed capability
Provides the device’s highest capable link speed in megabits per second (e.g. 10 = 10 Mbps, 54 = 54 Mbps, 100 = 100 Mbps, 1000 = 1 Gbps).

40044 Ethernet Control Configuration

Bit	Field	Description
15 - 14	Reserved	0
13	Link	Communication Service configuration: 0 = Link down; 1 = Link up
12 - 5	Reserved	0
4 - 3	Duplex (DP)	00 = None, 01 = Half-Duplex 10 = Full-Duplex, 11 = Auto-Negociate
2	Reserved	0
1	Fiber Media Supported	0 = Disabled; 1 = Enabled
0	Twisted pair Supported	0 = Disabled; 1 = Enabled

40045 Link Speed Configuration
Provides the device’s configured link speed in megabits per second (e.g. 10 = 10 Mbps, 54 = 54 Mbps, 100 = 100 Mbps, 1000 = 1 Gbps).

40046 Ethernet Control Operational

Bit	Field	Description
15 - 14	Reserved	0
13	Link	Communication Service Operation: 0 = Link down; 1 = Link up
12 - 5	Reserved	0
4 - 3	Duplex (DP)	00 = None, 01 = Half-Duplex 10 = Full-Duplex, 11 = Auto-Negociate
2	Reserved	0
1	Fiber Media Supported	0 = Not Operational; 1 = Operational
0	Twisted pair Supported	0 = Not Operational; 1 = Operational

40047 Link Speed Operational
Provides the device’s operational value of the link speed in megabits per second (e.g. 10 = 10 Mbps, 100 = 100 Mbps, 1000 = 1 Gbps).

Modbus TCP port 502 diagnostic

40555 - 40556 Modbus TCP Port 502 Diagnostic Data Validity bytes which Modbus TCP/Port 502 Diagnostic Data values are valid. Depending to the device all these fields are present or not.

Bit	Field	Description
15	Field Extended (FE)	0 = NOT Extended
14,13	Reserved	0
12	Port 502 Status (502)	0 = NOT Valid, 1 = Valid
11	Num MB Open Connections (OC)	0 = NOT Valid, 1 = Valid
10	Num MB Msgs Sent (MBS)	0 = NOT Valid, 1 = Valid
9	Num MB Msgs Rcvd (MBR)	0 = NOT Valid, 1 = Valid
8	Num MB Open Client Connections (OCC)	0 = NOT Valid, 1 = Valid
7	Num MB Open Server Connections (OSC)	0 = NOT Valid, 1 = Valid
6	Max Num Connections (MNC)	0 = NOT Valid, 1 = Valid
5	Max Num Client Connections (MCC).	0 = NOT Valid, 1 = Valid
4	Max Num Server Connections (MSC)	0 = NOT Valid, 1 = Valid
3	Num MB Error Messages Sent (MBE)	0 = NOT Valid, 1 = Valid
2	Num Open Priority Connections (OPC)	0 = NOT Valid, 1 = Valid
1	Max Num Priority Connections (MPC)	0 = NOT Valid, 1 = Valid
0	Num Attempts to Open Unauthorized TCP Connections (NUT)	0 = NOT Valid, 1 = Valid

40557 Port 502 Status 1 = no configuration      2 = operational and running

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