Pelco C538M-A User Manual download pdf (Page 15)

14 Pelco Manual C1941M (7/98)

3.3 SETUP

3.3.1 Preliminary Discussion

The VCR controller (VCRC) enables automatic control (via macro execution) or

manual control (from the CM9760-KBD) of seven predefined VCR functions. Each

VCRC can control up to 64 VCRs.

VCR control is implemented by associating System 9760™

GPIs to VCRs. When a

GPI is used for VCR control, its first seven auxiliary relays are used to control the

seven most common VCR control functions. The seven auxiliary relay numbers and

their associated VCR functions are listed below.

1. Play

2. Stop

3. Rewind

4. Fast Forward

5. Pause

6. Record

7. Eject

Two key setup procedures are required in order to accomplish VCR control from the

System 9760

™. The Frame Address Table in Figure 10 can be used as an aid to

implement both procedures.

(1) The VCR controller must be assigned an address (1 of 11) that corresponds to

a sequential range of 64 GPIs (VCRs).

Use the Frame Address Table to determine the DIP switch settings for assigning an

appropriate VCRC address setting.

(2) GPIs must be programmed in order of the 9760 CPU to communicate with the

VCRC.

Each physical GPI # corresponds to an individual VCR and its terminal connection

point on the VCRC. Therefore, 64 GPIs must be programmed in order to control 64

VCRs from one VCRC controller.

How the physical GPI # is associated with the VCRC is as follows:

• Physical GPI # 1 corresponds to the first VCR control terminal on the VCRC

that is addressed as controller # 1 (Frame Address # 0). Likewise, physical

GPI # 64 corresponds to the 64

control terminal on VCRC # 1.

• The next GPI # (the 65

) corresponds to the 1

control terminal on VCRC # 2

(Frame Address # 2). This scheme continues until the last GPI is associated

with the appropriate control terminal on the last VCRC used, which, in this

case, would be controller # 11 (Frame Address # 20).

3.3.2 DIP Switch Settings

DIP switch settings are illustrated in Figure 10.

NOTE:

It is highly recommended

that VCRC address # 1 (Frame Ad-

dress 0) be used first, VCRC ad-

dress # 2 second, and so on, to

minimize programming confusion.

NOTE:

GPIs are programmed us-

ing the 9760 System Manager pro-

gram. See Section 3.3.3, Software

Setup–Using the MGR Program to

Configure VCRC Operation, for in-

troductory instructions. For detailed

programming instructions, refer to

the Systems Manager manual.

(Figure 18 shows the relationship of these relay

numbers and the associated VCR control function

as seen on the CM9760-KBD LCD screen)

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 24 25

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