Rockwell Automation 1755-OF8 GuardPLC Controller Systems - Manual (Page 58)

58 Publication 1753-UM001C-EN-P - March 2010
Chapter 4 Wire GuardPLC 1600, GuardPLC 1800, and GuardPLC 1200 Controllers
Safety-related High-speed Counter Terminals
Counters are connected to these terminals.
Wire the GuardPLC 1200
Controller The GuardPLC 1200 controller has no LS+ terminal for a safety input
voltage source. Use the L+ supply terminal as the source for safety
input voltage. The four reference terminals, labeled I-, should be used
for the safety input voltage reference. This is a common reference for
all 20 inputs.
Lower Terminal Block
Terminal Number Designation Counter Function Gray Code Function
65 A1 Input A1 bit 0 (LSB)
66 B1 Input B1 bit 1
67 Z1 Input Z1 bit 2 (MSB)
68 L- Common reference pole
69 A2 Input A2 bit 0 (LSB)
70 B2 Input B2 bit 1
71 Z2 Input Z2 bit 2 (MSB)
72 L- Common reference pole
HSC
A1 B1 Z1 L- A2 B2 Z2 L-
65 66 67 68 71 72 69 70
1 3 5 7 9 11 13 15 17 19 21 23 25
I2 I4 I6 I8 I10 I12 I14 I16 I18 I20 I- I-
2 4 6 8 10 12 14 16 18 20 22 24
I1 I3 I5 I7 I9 I11 I13 I15 I17 I19 I- I-
Not
Used