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7-2. PCS-C150/C150P VISCA Connection
MD 8P
(PCS-C150/C150P)
1. DTR
2. DSR
3. TXD
4. GND
5. RXD
6. GND
7. IR OUT
8. MD Caution
9. RI
Fig. 7-3. VISCA Connection (Windows)
MD 8P(D30)
(PCS-C150/C150P)
1. DTR
2. DSR
3. TXD
4. GND
5. RXD
6. GND
7. IR OUT
8. MD Caution
Fig. 7-5. VISCA Connection (PC98)
7-3. VISCA Communication Formats
7-3-1. VISCA Packet Structure
The basic unit for VISCA communications is the packet ( shown in Fig. 7-6. ). The first byte 1 in the packet is the header. It contains the
sender and destination addresses. For example, the header for a packet sent from the computer at address 0 to PCS-C150/C150P at Address
1 is 81H ( hexadecimal ).
A packet sent to PCS-C150/C150P at Address 2 has a header of 82H. In the tables after pages 7-6, the header is listed as 8X. Insert the PCS-
C150/C150P address in place of the X. The header for a packet sent in response from the PCS-C150/C150P at Address 1 is 90H. For a
response packet form the PCS-C150/C150P at Address 2, the header is A0H.
Some of the setting commands (refer to Page 7-4) can be sent to all the equipment at one time ( broadcast ). For a broadcast, the header is
88H.
The terminator, FFH, ends the packet.
DSUB 9P
1. CD
2. RXD
3. TXD
4. DTR
5. GND
6. DSR
7. RTS
8. CTS
DSUB 25P
1. FG
2. TXD
3. RXD
4. RTS
5. CTS
6. DSR
7. GND
20. DTR
Fig. 7-6. VISCA Message Packet
MD 8P(D30)
(PCS-C150/C150P)
1. DTR
2. DSR
3. TXD
4. GND
5. RXD
6. GND
7. IR OUT
8. MD Caution
Fig. 7-4. VISCA Connection (Mac)
7-2
MD 8P
1. DTR
2. DSR
3. TXD
4. GND
5. RXD
6. GND
7. OPEN
8. OPEN
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