# Slot 3 Menu 9 − Resources

Mode: Open‑Loop

Parameter | 3.09.001 Cyclic Tx Links Free
--- | ---
Short description |
Minimum | 0 | Maximum | 255
Default |  | Units |
Type | 8 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT, BU

The number of available transmit cyclic links.

Parameter | 3.09.002 Cyclic Rx Links Free
--- | ---
Short description |
Minimum | 0 | Maximum | 255
Default |  | Units |
Type | 8 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT, BU

The number of available receive cyclic links.

Parameter | 3.09.003 Fieldbus Links Free
--- | ---
Short description |
Minimum | 0 | Maximum | 255
Default |  | Units |
Type | 8 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT, BU

The number of available transmit / receive process images for fieldbus protocols such as Ethernet/IP.

Parameter | 3.09.004 Cyclic Mappings Free
--- | ---
Short description |
Minimum | 0 | Maximum | 65535
Default |  | Units |
Type | 16 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT, BU

The number of available mappings in the system for use in cyclic links.

Parameter | 3.09.011 Nonsync link update period
--- | ---
Short description |
Minimum | 0.00 | Maximum | 655.35
Default |  | Units | ms
Type | 16 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 2
Coding | RO, ND, NC, PT, BU

The number of detected overruns per seconds for non-synchronous cyclic links.

Parameter | 3.09.021 Max nonsync link update period
--- | ---
Short description |
Minimum | 0.00 | Maximum | 655.35
Default |  | Units | ms
Type | 16 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 2
Coding | RO, ND, NC, PT, BU

The maximum detected overruns per seconds for non-synchronous cyclic links.

Parameter | 3.09.030 PCB Temperature
--- | ---
Short description |
Minimum | -128 | Maximum | 127
Default |  | Units | °C
Type | 8 Bit Volatile | Update Rate | Background write
Display Format | Standard | Decimal Places | 0
Coding | RO, ND, NC, PT

The temperature of the module circuit board.