Masters and Slaves Section 4-1
50
Pins 1 to 3: Unit Number
Unit no. Pin settings
Pin 1 Pin 2
Pin 3
0 OFF OFF OFF
1 ON OFF OFF
2 OFF ON OFF
3 ON ON OFF
4 OFF OFF ON
5 ON OFF ON
6 OFF ON ON
7 ON ON ON
Unit numbers 0 through 7 are used in C1000H and C2000H Systems. Use
numbers 0 and 2 or numbers 1 and 3 for C500 Slaves attached to a C200H
Master (to prevent overlapping word assignments). All other PC Systems use
only unit numbers 0 and 1.
Pin 4: Output HOLD/STOP Mode
OFF: STOP mode All output words set to OFF for transmission errors.
ON: HOLD mode All output words retain status transmission errors.
Transmission errors for Slaves include errors in data from the Master and
no-data errors. Note that HOLD mode is not effective for all errors detected
by the CPU Unit.
4-1-3 C200H Master
Indicators
Unit
number switch
T
ransmission line terminals
Note
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