Omron 3G8F7-CRM21 User Manual page 143

Shared Memory Area Specifications
Error Counter
Detailed format
Name Access
Node causing a Read
communications
stop
StateStatus Read
Data rate Read
Communications Read
cycle time
Maximum Read
communications
cycle time
Cumulative CRC Read
reception error
Cumulative code Read
reception error
Communication Read
State
Communications Read
stop mode
Registration table Read
mode
It is the error counter of the CompoNet Master Board.
The CompoNet Master Board processes retries, when it observes a
communications error on a Slave or Repeater Unit.
Description
It stores the MAC address (or the address on
CompoNet protocol) of the Slave Unit or the
Repeater Unit that caused a communications
stop due to communications error.
[For Word IN/MIX Slave Unit]
MAC address = Node address
[For Word OUT Slave Unit]
MAC address = 64 + Node address
[For Bit IN/MIX Slave Unit]
MAC address = 128 + Node address
[For Bit OUT Slave Unit]
MAC address = 256 + Node address
[For Repeater Unit]
MAC address = 384 + Node address
It stores the same content as ones in
StateStatus of the Basic status group.
It stores the data rate.
0: 4 Mbps
1: 3 Mbps
2: 1.5 Mbps
3: 93.75 kbps
It stores the present value for the communication
cycle time in units of 0.1 ms.
It stores the maximum value as the
communications cycle time in units of 0.1 ms.
The maximum communications cycle time must
be cleared first in order to measure the
maximum network cycle time.
It is the cumulative count of CRC errors.
It stops counting at 0xFFFF.
It is the cumulative count of Manchester
encoding errors.
It stops counting at 0xFFFF.
Indicates the communications state.
0 to 2: Initial processing after participation,
3 to 4: IDLE state,
5: RUN state,
7: Communications stop state
It stores 0x0001 when the Communications stop
due to Communications Error Function is
enabled.
It stores 0x0000 when the Function is disabled.
It stores 0x0001 when the Registration Table
Function is enabled.
It stores 0x0000 when the Function is disabled.
Section B-3
123