Rockwell Automation 440R MSR312 Configurable Monitoring Safety Relay w/DeviceNet Communications - Manual (Page 9)

Configurable Monitoring Safety Relay with DeviceNet™ Communications
Chapter 2: Device Parameters
MSR312-UM001B-EN-P 9
Chapter 2: Device Parameters
Parameters 1…20—Input Values (read only)
Input 1a Value - Input 10b Value
The MSR312P supports up to 10 inputs modules to its input side. Each input module has two independent input connections.
These are shown as parameters Input 1a Value (the top wiring connection of the module) and Input 1b Value (the bottom
connection for input module 1). The input values can be either ON or OFF. Input values not used will show an OFF value.
A value of ‘ON’ indicates that the input is active. A device is connected properly and the input LED on the front of the module is
green.
A value of 'OFF' indicates that the input is not active. The Input LED on the front of the module is red. This may be due to various
reasons, including:
• An operator intentionally triggered the attached device (such as by releasing a two-hand control or stepping on a safety
mat),
• An off-wire condition in which a wire has physically fallen off the input,
• The device was removed from the channel, or
• The simultaneity monitoring time limit (if enabled) may have been exceeded.
Parameters 21…23—Input Module Values (read only)
Input Modules 1…10 State
The purpose of these parameters is to allow the reading of multiple modules in a single byte, rather than reading each individual
status of parameters 1…20. Parameter 21 includes the first four modules. Parameter 22 contains status of modules 5…8, and
Parameter 23 contains the status of modules 9 and 10. A '1' or check indicates the input is active; otherwise the input is not
active. Module 1 is the input module closest to the base module (on the left). Modules count from right to left, respectively, to the
base module.
Parameters 24…26—Simultaneity Errors (read only)
Simultaneity Enabled Input Modules 1…10
These parameters indicate that the simultaneity time period for the selected application has elapsed without all required input
contacts having been reset. See Parameters 27…29 for more details.
An example value on Parameter 24 might be: 00000001
The “1” value indicates that Input 1a had a simultaneity error. The Input LED on the front of the module will be blinking red. The
Status LED on the MSR312P will be blinking at a 2X rate, indicating an input fault.
Parameters 27…29—Simultaneity Enabled (read only)
Simultaneity Enabled Input Modules 1…10
Dual channel and triple channel input devices, like e-stops, safety gates and safety mats can be connected so that the
MSR312P looks for each channel to become active within 3 seconds of each other. Simultaneity is enabled through wiring
configuration only; the user cannot enable this feature via software (see the MSR300 Instruction Manual).
These parameters indicate if simultaneity monitoring (sometimes referred to as synchronization monitoring or coincidence
gating) has been enabled for the channels. Simultaneity monitoring requires that should an input enter a faulted state, resetting
all input contacts of a channel (or channels, depending upon application selected) must be accomplished within a certain time
period. For 2- or 3-channel operation, this time period is fixed at three seconds, while for two-hand control applications the time
period is fixed at 0.5 seconds.
An example value on Parameter 27 might be: 00000001
The “1” value indicates that Input 1a has simultaneity enabled. The other inputs are not using the simultaneity feature.
Value Meaning
0
1 Input inactive
Input active