Lathem DDC2 User Manual download pdf (Page 55)

Page 49 Digital Display Wall Clock Guide DDC2 / 4-RS -485 Wiring

LTR4 / 8-512 to DDC2-RS / 4-RS

Terminal # Signal Signal JP4 Connection

9 (D-) Transmit Data (-) Transmit Data (-) D-

8 (D+) Transmit Data (+) Transmit Data (+) D+

BLK

115VAC

Local

Power

Other Clocks

LTR4 / 8-512 Terminal Connections

Cable should be RS232 twisted pair / CAT3 or CAT5 type.

Maximum distance to last DDC Clock is 4000 feet.

Last DDC Clock must have jumper installed on position J2.

See page 8 for details.

Set switches 1-5 of S1 as shown.

Indicates depressed side of switch

DDC2-RS / 4-RS - JP4 Connector

LTR4 / 8-512

D+

D-

D- of JP4

D+ of JP4

11 30

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 61 62 63

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Lathem DDC2 User Manual Page 55