MODULE-IDENTITY, OBJECT-IDENTITY, OBJECT-TYPE, Integer32
                                                    FROM SNMPv2-SMI
                                                      -- RFC 2578
MODULE-COMPLIANCE, OBJECT-GROUP
                                                    FROM SNMPv2-CONF
                                                      -- RFC 2580
SnmpAdminString
                                                    FROM SNMP-FRAMEWORK-MIB
                                                      -- RFC 3411
ITSBitmap, ITSInteger8, ITSUnits, ITSUnsigned8, ITSPositive8
                                                    FROM ISO26048-1-FieldDevice
fdGlobalMIB, fdGlobalConformance
                                                    FROM ISO26048-1-Global

The MIB that defines objects to manage logical supplemental roadside sensor and actuator (SRSA) ports of the field device. Copyright (C) International Organization for Standardization (ISO) This version of this MIB module is part of ISO 20684-2; see ISO 26048-1 for full legal notices. Copyright (C) International Organization for Standardization (ISO). This MIB module is part of ISO 26048-1; see ISO 26048-1 for full legal notices.

A static table that provides summary information about all of the logical SRSA ports of the indicated fdSrsaType. SRSA ports are general-purpose in the sense that they shall not be used as a part of mission-critical or safety-related functions; the fdSrsaType field usually assigns a specific function to the port. The table is static from the SNMP perspective but may be configurable by other means.

An entry that provides summary information about all of the logical SRSA ports of the indicated fdSrsaType.

An index that identifies the logical type of SRSA port. Values that start with an ASCII question mark shall be available for implementation-specific purposes. All other values are registered in the Registry for ITS Identifiers (RITSI), available at https://iso-tc204.github.io/iso5345/. Each standardized value shall be associated with a precise meaning. Non- standardized entries shall not use any uppercase ASCII characters in the value of this object. Implementations reading non-standardized values should take care to verify that the meaning, units and scale are as expected. All implementations should take care to ensure precision and direction are as expected for intended use.

The number of rows in the SRSA port table for the indicated SRSA port type.

A bitmapped value indicating the status of each logical SRSA port of the type specified for this row of the table. If the current value of fdSrsaPortStatus for the port is 'unavailable' or 'nonoperational', or if the auxiliary port's value is greater than the maximum value or less than the minimum value, the bit shall be set to one (1); if the current value of fdSrsaPortStatus for the port is 'other', the value of this bit is governed by rules not defined by the ISO 20684 series; otherwise, the bit shall be set to zero (0).

A bitmapped value indicating the warning status of each logical SRSA port of the type specified for this row of the table. If the current value of the auxiliary port's value is greater than the maximum threshold value or less than the minimum threshold value, the bit shall be set to one (1); otherwise, the bit shall be set to zero (0).

A static table that provides access to control and status objects for each logical SRSA port supported by the device. SRSA ports are supplemental in the sense that they shall not be used as a part of mission-critical or safety-related functions. The fdSrsaType field assigns a specific function to the port. The mechanism by which a logical port is associated with a physical port is notn defined by this document. The physical ports may be analogue or digital. The electrical levels used by the ports are outside the scope of this document. Rows cannot be added or deleted via the standard SNMP interface defined by this table, but implementations may provide other mechanisms to allow for end-user configuration of the table.

An entry that provides detailed information about a specific logical SRSA port.

An index to uniquely identify the row of the table within the fdSrsaType. Digital port numbers shall be assigned sequentially within each fdSrsaType starting at one up to a maximum of 127. Analogue port numbers shall be assigned sequentially within each fdSrsaType starting at 128 up to a maximum of 255. The location of the physical ports associated with each logical fdSrsaPort is implementation specific and may be configurable by means not defined within this document.

A textual description of the logical SRSA port and/or the device connected to the port. The description should describe the location of any physical port and the sensor or controlled device.

An indication of whether the logical SRSA port supports input and/or output capabilities. For example, an input-only cabinetTemperature port would imply a temperature sensor; an output-only cabinetTemperature port would imply a thermostat; an input/output cabinetTemperature port would imply a thermostat with the ability to report the current temperature reading. The direction for entries where fdSrsaType is registered in the RITSI shall be one of the direction values defined for the fdSrsaType in the registry.

Indicates the units in which the value is reported/provided. The units for entries where fdSrsaType is registered in the RITSI are encouraged to use the units recommended in the registry.

Indicates the resolution used by all value related objects for this logical SRSA port, expressed as a base 10 exponent. For example, if fdSrsaPortUnits is metres and fdSrsaPortExponent is -3, the value objects are represented in millimetres; if fdSrsaPortUnits is metres and fdSrsaPortExponent is 3, the value objects are represented in kilometres. The exponent for entries where fdSrsaType is registered in the RITSI are encouraged to use the exponent recommended in the registry when it allows sufficient resolution (e.g., if the exponent and units suggest the value is reported in millimetres, sensors that report values in 100ths of metres are encouraged to use an exponent value of -3 and to increment the value by 10 for every hundredths of a metre rather than using a value of -2 and incrementing by 1).

The precision of the reported values. A sensor may measure the same condition multiple times and report slightly different values; the value of this object would report the maximum variation that may occur in the sensor value object (at a 99% confidence level) when reading a particular condition within the sensor's defined operating range. The precision for entries that use a fdSrsaType that is registered in the RITSI shall be less than or equal to the maximum imprecision for the type.

The minimum value supported for the logical SRSA port. Input values below this reading should be considered unreliable.

The maximum value supported for the logical SRSA port. Input values above this reading should be considered unreliable.

The output value set for the logical SRSA port. The value of this object should be between fdSrsaPortMinValue and fdSrsaPortMaxValue, inclusive. A SET request for a value outside of this range on a output or bi-directional port shall result in a 'inconsistentValue' error. For output ports, this should be the same value as the value object. For bi-directional ports, this value will represent the last commanded state. For an input port, the value shall always be zero (0). An attempt to set this value on an input port shall result in a 'notWritable' error.

The current value on the logical SRSA port. For an output port this value should be the same as the requestedValue. For input and bidirectional ports, this is the current value being received.

The lower warning threshold defined for the logical SRSA port. Whenever the fdSrsaValue is less than the value of this object, the bit in fdSrsaTypeWarning that corresponds with this sensor shall have the value of one.

The upper warning threshold defined for the logical SRSA port. Whenever the fdSrsaValue is greater than the value of this object, the bit in fdSrsaTypeWarning that corresponds with this sensor shall have the value of one.

The operational status of the SRSA port. Valid values are: other - a state not defined by this document active - The SRSA port appears to be operating normally and is in service. unavailable - The logical SRSA port is determined to be unassociated with any attached equipment. This may be due to the logical port not being associated with a physical port or may be due to the device definitively determining that the physical port is not attached to any device. nonoperational- The data received from the logical SRSA port appears to be suspect, which may be due to a disconnected wire or out-of-range, jittery, or wildly fluctuating readings. notInService - The logical SRSA port has been taken out of service. A manager may set the object to 'active' or 'notInService'; an attempt to set the value to any other value will result in a 'wrongValue' error. The port will remain in the 'notInService' state until it is set to the active state. Once commanded to the active state, the status may change among any state other than notInService until manually set to the notInService state.

A node containing conformance statements related to the fdSrsaMIB, as defined in ISO 26048-1.

A node for compliance statements for the fdSrsaMIB.

A node for group definitions related to fdSrsaMIB.

Management information that is required if the field device supports one or more input or bi-directional general-purpose I/O ports.

The basic objects necessary for implementing the supplemental roadside sensor and actuator feature.

The objects necessary for controlling and monitoring the output of a SRSA- port.

The objects necessary for monitoring the value of a SRSA port.